this is bs , a stock sn95 gt bone stock just slicks does not have enough power esp to the ground to run 13's, I dont care if you have john force driving it, you would need bolt ons, weight reduction, slicks skinnies, full exaust, pi intake, which = not stock, im sorry this is all bs, your car prob has a pi motor
swap in it to run 13's .
After seeing your rebuild of your car, im pretty sure you did a pi swap motor,
A friend of my had a 98 gt and he rebuilt his, he swapped in a stock 2001 gt pi motor, and just had gears, intake , welded in flowmaster catback, with dr's he ran 13.8@98. which would be what your saying you would run if you had just slicks on a bone stock non pi car, BS!! your so full of shit