Stock GT how fast?

[aclark]

I have a 92 GT with exhaust,cold air kit,4.10 gears,stock AOD and converter,and good suspension. I want to know if I put a good converter and valve body in the car is it possible to put the car in the 12's without taking the heads off the car. If so give me some ideas on what to do. Thanks for any info anyone gives.

[JimBoneCrusher]

I would suggest going to a custom chip in order to get maximum potential out of your car. low 13's with slicks are possible.

[aclark]

Where is the best place to get a custom chip?