04/22/2017 – A picture that I stumbled across on the old Jayski page. This is reputed to be Cup wind tunnel testing for the 2003 Grand Prix. I can only surmise that this must have been early on in the development of the racecar as the bumper definitely does not look like what showed up on the track in 2003 (and a few times in 2004).
Johnny Benson Jr at the unveiling of the 2003 Grand Prix racecar, notice the different bumper aspect.
Pontiac Racing 