i have a 90 gt with a 302, aluminum heads, ported edlebrock performer intake, pretty nasty cam , and all the bolt ons. it has run 12.8 at 107 on et streets. this week i am putting on the tubular k member, 90/10's up front, 50/50's in the back, tubular control arms and rewelding the torque boxes from where they have finally given up the fight. i am also hoping that by the time the track opens i will have the a.c gone and the battery in the back. any ideas on how much of a difference i might see? oh yeah, i also removed the inner fenders and the bumper core. best 60' until now is like 1.8