ls2 402 RX7 dyno
I think the cars only gain 40 or so lbs. with the LSX swap. Maybe slightly more with the 402/LS2
if i was you i would totally take off the ls1 part it kinda ruins the whole sleeper feel but to each his own..
badass car either way!
Ditch the plates. It's a cool plate but it does take away from the sleeper image. I like the big pipe out back. 
