i don't think its even a IROC. for one thing, the gauge cluster is the same as the 82-88 base model cars. and the taillights on that car are also from a 82-88 base car. the IROC's had these lights:
after the 1989 model year ALL camaro base, RS, or IROC had them. I had a 88 coupe that had the same rear lights as the one in the ebay auction. I masked off the lenses and painted the center ridge satin black which made it look more like the early 3rd generation Z28 cars. and most IROC coupes were T tops, very few IROCs did not have them. I am not saying that this car is NOT an IROC, i am just thinking its a base or RS car with the IROC's front fascia. I cannot see the side rocker panels clear enough to tell if it says IROC or if it says RS with the chevy 'bowtie' next to it. I have had enough 3rd gen cars in my family to know the differences

.