i have one mod on my car which is i got some 17" pacer rims with huge rubber. i put some pirelli tires and i also run 93 oct gas. my tires kinda stick out the side of my fender cuz there 7.5 inchs wide. i line up with ST all the time around here cuz everone has one and i walk all over them. im glad i didnt spend the extra money on an ST lol. but if you look the stats up on the zx3 2.0 and the zx4 2.3 the power to weight is pretty much the same so its all in the mods and how you shift anyone else notice this???