So those cars came out rather poor (at least mine did). RWD Civic == torque-less until 6500 rpm, then tail happy poop. Solstice == massive understeer, followed by massive oversteer poop. Altezza == grip-less, a bit heavy poop. The Altezza was the most fun to drive (325 ft/lbs supra motor, hehe), but it was a little too heavy to keep up with, well, anything in the turns.
I like the simple requirements though, we should do more with just two factors (HP and weight, PI and drivetrain, year and weight, make and TQ, etc.).
Edit: hmm, so i think this may have more to do with my driving style, notice how all three cars i claim don't have grip (understeer then oversteer? drive AWD much?).