Yeah Pontiac had been around for years, it was a comnenerative deal you could get. I was about to graduate high school when these came out, I was hoping my pops would get the SLP one when they got my moms 2003 gp.
I believe technically its a gtp Special Edition with 75th badging, its not perfect but hey IRS 14 years old.
I know GA's and Formulas got the badging, looks like a dealer might have slapped decals to bump the price.