There's an old saying that goes, "if it ain't broke, don't fix it." Many purists take this attitude to classic muscle cars and turn their noses up at anyone who dares to change one away from its stock form. But, that hasn't stopped a plucky band of builders and artists from modifying them anyway. And what better way to cause a storm than by slapping on an insane body kit? Iconic as they might be stock, it's impossible to deny that these kitted-out builds all look insane.
Modifying a car's exterior often goes hand in hand with modifying its internals, and there are some pretty unbelievable engine swaps lurking under the hoods of these cars. There's a surprisingly wide variety of builds too, with some kitted classics being fully-equipped track day racers and some of them clearly just garage queens. Either way, these modded classic muscle cars represent the best of owners sticking two fingers up at the purists and doing things their way.
10 Chevrolet Camaro '73
Many collectors of classic muscle cars prefer to keep them locked away in climate-controlled garages, only taking them out on sunny weekends and for the occasional car show. Not this owner.
This '73 Camaro is a hard-driven race car that's a regular at competitions all over the USA. Owner Brian Hobaugh has competed in countless competitions with this car and won plenty too. Not to mention, he's created one of the best looking classic racers out there.
9 Pontiac GTO Judge '70
Despite its realistic looks, this GTO Judge is actually a render. It sports a huge widebody kit and side exhaust pipes, with American Racing wheels as an extra period-correct touch.
It's a sort of cross between a race car and a traditional slammed build, and the two styles work really well together here. It might not be to everyone's tastes, but it's certainly a head-turner.
8 Chevrolet Camaro "Road Rage"
The SEMA show is always a good spot to see some of the wildest classic car projects, and this "Road Rage" '70 Camaro featured at the show in 2018. It's very wide, very low and very loud, in the best way possible.
It's worth scrolling across the photoset included above to check out the car's interior, as it's surely one of the best retro-modern cabins of any recent hot rod. It manages to look sleek, classic, and modern all at the same time, with two-tone leather everywhere and a discreet touchscreen in the center console.
7 Chevrolet Corvette '65
Owned by the same enthusiast who runs the '73 Camaro above, this is another car built to be driven fast. It's one of the most subtle body kit setups in this list, but it still looks great.
Fans of the Fast and Furious movie franchise might think this car looks familiar, and they're not mistaken. That's because this 'Vette is the original model that Letty's Corvette was based off of in The Fate of the Furious.
6 Ford Mustang "Hoonicorn"
Ford fanatic and general automotive madman Ken Block has built his fair share of insane creations with his Hoonigan brand over the years. The Mustang-based Hoonicorn has to be one of the best, with a tire-shredding 1,400 hp engine slotted under its hood.
It runs on methanol rather than gasoline and it goes from 0-60 in just 1.8 seconds, making it one of the fastest Mustangs on the planet. Unfortunately for Ford fans, Block announced the end of his partnership with Ford last year, and so it looks like there won't be any more classic Fords built by Hoonigan.
5 Dodge Charger '69
This '69 Charger render is a clash of old and new, keeping the classic boxy Dodge shape but slapping on a huge widebody kit. There's also a V10 engine from the Viper sitting in the engine bay.
It's such a clean render that it almost looks real, but unfortunately, it isn't, and there are no plans to make this build a reality. It's a shame as it'd be the ultimate blend of two great eras of Dodge automobiles.
4 Chevrolet Camaro "Star Wars Rides"
Murdered out cars can go one of two ways, either looking classy and understated or just looking terrible. There's plenty of examples out there of bad blacked-out rides, but thankfully this Star Wars-inspired Camaro isn't one of them.
It might look stealthy, but with 1,000 hp, this build certainly won't sound it. The red lighting accents around the headlights are also a great additional extra, along with the subtle red lighting behind the front grille.
3 Plymouth Barracuda
3D artist BradBuilds is renowned for making controversial designs from some of the biggest automotive icons, and this is his take on the Plymouth Barracuda. The 'Cuda is already quite a wide car when stock but here it's even wider, thanks to a set of chunky over-fenders.
Like with most of Brad's designs, there are no plans to make this car a reality, so purists can breathe a sigh of relief. If nothing else though, it proves that even hallowed silhouettes like the Barracuda can look even more insane with a little imagination and some rendering skills.
2 Ford Mustang '67
This custom fabricated widebody Mustang has to be one of the craziest cars on this list, simply because it's real. There's no rendering involved here, instead, this is just a chopped and slammed beast that's been put together by one determined builder.
The patchwork look is a bit love-it-or-hate-it, but then anyone who builds a widebody '67 Mustang isn't going for other people's approval. The car is also still road legal, which is an impressive feat in itself.
1 Chevrolet Corvette C3 "Rambo"
Nicknamed "Rambo", this '73 Corvette was built by owner Garrett Randall for one thing: performance. It's a dominating autocross car, with everything custom fabricated exactly the way Randall wanted it. That includes new front fenders wrapped around those meaty BFGoodrich tires.
Like many of the best performance Chevies, this C3 is LS-swapped, and now makes 530 hp. It looks so good that it's easy to forget that this bodywork isn't stock, and in fact, it's been subject to a full body kit rework to get it looking this good.