Not getting enough excitement from your Phantom's quiet, 6.75-liter V12? Well, you're not alone. The owner of this Phantom had its original engine replaced with a hugely powerful, ultra-reliable 2JZ straight-six from the Toyota Supra. It's about as baller as a car can get.
The E39 M5 is famous for its fantastic-sounding, torquey 4.9-liter S62 V8 engine. But what happens when it blows up? Drop in an 800-horsepower supra engine, of course. The result is a super sedan with seemingly unlimited shove and a whole lot of whooshing noises.