To some, an addiction to cars and going fast isn't a joy, but a curse. This is chiefly due to the exuberant cost associated with purchasing a vehicle, maintaining one, and also modifying it. Needless to say, you'll spend a lot of your own hard earned cash on cars if you go this route.

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However, for the lucky few who see money as no object, the market is ripe with options for new cars and mods. As you'd expect, there are a good bit of modifications one could really spend a pretty penny on. For example, here are ten of the most expensive mods on the market that you can do to your car...

10 10. Performance Coilovers

For the young and bright-eyed racing enthusiast who just bought their first project car, one of the first modifications they may look towards are performance coilovers. However, they'd be dismayed to find out just how costly this critical upgrade can be.

Sure, you could always skimp out on costs, but this will come back to haunt the driver, as a low price typically means low quality in the automotive parts world. Another choice is to go with the greats such as B.C., H&R, DNA Motoring, and many more, who've had their metal tested (No pun intended) time and time again. This quality, though, costs a lot, with many going upwards of a thousand dollars to as much as nearly ten thousand (Depending on the make, model, and brand of Coilover).

9 9. Stereo System

One of the biggest, and highest selling, aftermarket modification (That those who aren't too car savvy go for) is a simple stereo system. You can always spend a normal amount of money on the usual speaker/subs, or you could go all-out like others do.

At first, a stereo system doesn't seem like it would be that much. After all, they sell them at places like Walmart and Best Buy, so why would they be? Well those are the lower-end versions, with some of the best products going for many thousands (Not including installation fees). Although it does nothing for performance, a select few car enthusiast feel that it's a very important piece to the greater puzzle.

8 8. Full Exhaust System

In terms of effectiveness, bang-for-your-buck, and actual performance enhancements, one of the best things you can do to your car is a new exhaust. This could consist of the standard downpipe change and muffler, or the entire system.

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Typically, an entire exhaust system being made and fitted to a car isn't the most common modification you'll see, as many just go for smaller exhaust mods. If you spend the money, though, it could significantly increase horsepower, increase the flow of gases through the engine, and sound much better.

Be prepared to fork over some cash, however, as this mod will easily be three times as much as the alternative. Don't be dismayed, though. It's totally worth the extra effort!

7 7. Interior Reupholstering

Like with a stereo system, some of the most expensive things you can do to your car don't affect performance at all. Rather, they are more centered around aesthetics, comfort, and uniqueness. For another example, observe the process of a (full) interior reupholstering job.

The time spent, materials used, and effort/skill involved in something like reupholstering is the prime driver behind its immense price tag. It's, certainly, no easy job and requires the best. If you're willing to spend at least a few thousand dollars (Up to over $10K based off of make), then a new interior might be just what your car needs.

6 6. Transmission Swaps

Of all the things you could do to a vehicle, swapping out its mechanical components for an entirely alien one can be amongst the most costly. Also known as "swaps," there are several types that can be done, including with transmissions.

The driver can either swap from automatic to manual, or manual to auto (But, why would anyone do this, realistically?). Such a change can make the car a whole new animal, with improved performance and a better feel behind the wheel.

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What's funny about swaps, though, is that the transmission/part may not even be what's expensive. Instead, it's usually due to the cost of labor (Excess of several thousand) since many mechanics charge over $100/hour.

5 5. Supercharger

You've got a problem: You've done everything you can to modify the car at the basic level. Air filters, exhaust, weight reduction, and so on, just don't seem to be enough. One solution could be to buy a new car, or, you might decide to add some forced injection into the thing.

In the selection of forced induction mods, one of them is a supercharger: A belt-fed (usually) system that acts similar to turbos, but with less lag. A supercharger can give your car the extra boost it's been craving, however, make sure that you're not running on stock internals or plan on skimping out on costs. There are, of course, good low price options, but even those will be at least $2,000, with the best being close to $10,000.

4 4. Engine Swaps

As stated previously with transmission swaps, swapping can be one of the most strenuous and expensive exercises a car lover can attempt. Not only are they very expensive for the labor and parts, but with the time taken to complete it is (arguably) worse. Sadly, engine swaps are no exception to this constant.

The concept of an engine swap is exactly as it sounds: Replacing an engine for a new one. Not every car needs one, but many can benefit with a Corvette's LS-series V8's or a Supra's 2JZ-GTE. After all, there's nothing quite like an LS swapped 350Z or a 2JZ BMW M3.

3 3. High-End Tunes

If you've ever been scrolling through car pages on social media, you've likely seen images of supercars on dyno's, testing their tune and power figures. A tune doesn't always guarantee a greater performance, yet, it can still do wonders with the right car and right tuner.

A "tune" can also mean a lot of things. To some, a tune may be something as simple as a new ECU or E85 setup. However, to others, it can be an entire, professional, rebuild and modification of the original car. For the latter, prices can sometimes go beyond the M.S.R.P. of the car itself.

2 2. Turbos

We mentioned the choice of forced induction as a mod earlier on with the supercharger. The other side of this two-headed coin seems to be much more popular, as countless drivers and manufacturers have adopted its use. Of course, this is about turbochargers.

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With the increasing demand for ecologically friendly vehicles, reduced carbon emissions, and better fuel economy, more and more companies have leaned towards hybrids and turbos to give them the desired results. These turbos also work to improve performance, as a good one (Or two) can add over 100 horsepower, easily.

However, turbos are notorious for their cost, especially when you blow up your engine due to poor planning and building. Twins, obviously, cost more (Often times double or more) than a single turbo, yet, both reach upwards of $3,000 on a good day.

1 1. Wide Body Kits

As time moves forward, new trends appear and disappear just as fast as they came. This can be seen in all walks of society, including (But not limited to) car culture. Just like how the early 2000's was into neon-lights and 'ricing,' now enthusiasts have turned towards wide body kits.

What really began this trend were companies like Liberty Walk and Rocket Bunny as they released versions of high-end supercars/hypercars with a bolt-on body kit. This blew up the car community, causing it to become what it is today: A giant of the car world.

As far as price, if you're going to be cutting apart a car, adding new pieces, and redesigning the whole thing, especially on a Lamborghini or Ferrari, no wonder it can be anywhere between $10K to $40K. Some of the best things are only for the rich, regrettably...

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