My brother bought the above mentioned 2004 Grand Prix GTP. Pic for your delight...
He took his car to the track and ran a best of 14.69 @ 93MPH (2.099)60ft. Bone stock
We decided to take our cars out, just to see who'* was quicker. We were not able to go
from a stop, but from a roll of 10-15MPH.
On "3" we both mashed it, dead even, slight wheel spin on both cars.
I slowly gained on him about a cars length by the time we hit 70MPH.
I was pretty happy and I think it was an outcome was something we both didn't expect.
I think my car will run mid 14'*. Maybe soon, I'll have to go to the track.
*Race occured on private property