it's not hard to believe that article, stranger things have happened with cars....
The timeline is a little wonky to be believable, however.
The 2+2's were made for the 1986 NASCAR season which starts in February 1986.
My car is one of the later 2+2's and I think its an March/April car.
This car was built in Sept 1986 (which actually makes it an '87). The 2+2 line would have long since been shut down and they would have moved onto other things.
Unless I see a picture of the RPO sticker, I'm skeptical.
Auto-fab made some 1987 prototypes for Pontiac, And they had Aero back windows, so this car was made AFTER the 1987 prototypes, if parts delivery/running out of parts was an actual issue.