Is he an auto or manual? My 98 camaro had 12hp over stock and yet was .8 quicker (12.9 vs. 13.7) and 2mph faster (104 vs. 102).
All I had was a 2800 stall, MAF from a 2001 model, CAI, shift kit, and drag radials. So if I can get into the 12's with 12hp over stock, that guy can do a LOT better!!
Still a good run! That stang should have a 150 shot on it.