Ok my best time at scribner (a 1/4 mile track) was a 13.7 at 106.5 mph and i see all theese time slip with people running better than with less speed, i think its kind of a bad time i still have the stock rear end but i run a venom vcn 1000 nitrous kit 100 shot , bbk 75 mm tb, bbk intake larger maf, no mufflers and on street tires i cant seem to get better than that i was wondering what could help me. and yes its a 5spd