do you have the full oem exhaust? removal if the res. and sec. cats along with the oem battery should be well over 100 lbs. use the shuriken battery, and some clk rims with dr,s and that should be worth at least 2/10's faster times putting you near the 11's!! if its feasible woodys trick of using bolts thru the floor for the seats allows quick removal of the pass seat on raceday. and big piece of dead weight gone.