Hi Eddie,
The sticker on my rs/ss L48 auto a/c, built 3B is P/N 6484584. I know the early sticker had a black background and the later was white, so car build date is critical.
There is a 7 page discussion on this topic over at the CRG. I posted pictures and dims over there last year.
http://www.camaros.org/forum/index.php?topic=8847.0