[camarojoe]

I think you are thinking of the 1992 25th anniversary cars, known as "Heritage Editions". They came in Red, white, black, or purple, and had stick-on 69 Z/28 style stripes. There was no special edition made for the 20th anniversary in 87... might have been a dealer add-on package or something, but GM never did anything special for 1987. I have all the original advertising and sales brochures for the Camaro and the Iroc-Z was the top dog Camaro that year, with the optional 5.7 Liter 350 TPI. No mention of any type of anniversary package at all.