*** C&P ALERT *** C&P ALERT *** C&P ALERT *** (well sort of, I can't find the original post)
Modifying the cars is pointless. Eventually, people would work out the ideal setup for each track and car and everyone would use it. Look at the number of people who use Inferno setups if you need proof that it would happen.
Therefor you end up with a field of identical cars, and guess what? That's exactly what we already have.
So how about you just drive the cars you have and I dunno, bang a metal trash can lid with your face to simulate the noise of a pointless "masseev zorst!!1111"