When I first got my car, I went to the track and did a base test on it. This was a used, 1998 GT Coupe w/ 4R70W auto. The only mods i had on the car then was H-Pipe, Chip, K&N, and March RamAir under the car. That night was very very damp, I'm talking mositure running off the glass damp, and I didn't hook worth a %$#$, i ran 15.01 best time, that's mostly stock with 3.08 and failing posi. After I got home, I was scraping rubber off the fenders for weeks, so I know that in dry weather and not spinning I would have been 14.9x times, at least. This was also my first time at the track in a stang, I am used to driving a full size truck with vette engine and driveline. I don't know what my car runs now, but I do know that I have beaten some of the local 99+ 5 speeds, with no probs. I have also added a lot more since then.
http://216.90.30.5/steeda_gt_mustang.htm