You mean Chevrolet Camaro Iroc Z28. The Trans Am was the upgraded Pontiac Firebird. Otherwise, great work.

The most recent model of car used in IROC was the Pontiac Firebird Trans Am, which began competition in 1996. There were no manufacturer designations on the cars, however, because Pontiac pulled their support from the series. The program was still allowed to use a car that resembled the Trans Am.

from https://en.wikipedia.org/wiki/International_Race_of_Champions

@MaxInk076
changed to formula like real Firebird TA

@Zesta Right, that is for the racing series which is a totally different entity. As far as the manufacturing of vehicles with the name IROC, only Chevy produced the Camaro. The IROC name was designated only for the Camaro. The Formula edition was the special edition Trans AM, which is the upgraded Firebird. In later years, before Chevy and Pontiac (Both divisions of General Motors[GM]) discontinued those lines (2002), they re-dubbed the special edition Trans AM to the WS6, but the car would list (i.e. insurance co) as Pontiac Firebird Formula Trans AM. WS7 and WS9's turn up in the last few years of production, but those were fan-made as Pontiac did not produce a factory edition WS6 at least not name wise. The car was produced with the same specs as a WS6 (minus the rear disc brakes) without the badging, So someone in Europe made up some WS7 badges to signify the car has WS6 parts but wasn't factory built.

I also noticed a Camaro Ruiner with IROC-Z, and it looks more like a Trans Am like mine