I know you guys are hating on this dude's car. (I think it's fugly too) But, in stock form, for it's day, the GTP wasn't a bad performer:
1997 Pontiac Grand Prix GTP 6.6 14.9 (Car Craft)
(couldn't find any info on a 199
Those really aren't bad numbers for a big 4 door front driver from 12-13 years ago.