Hi, and welcome to the SYC. If your car is a 1971, and it has the larger spoiler in the back and the spoiler in the front then your car was equipped with RPO D-80. For 1971 the Z-28 got the short 1 pc rear spoiler standard and the previous COPO 9796 was retooled to fit better and became RPO D-80 and for 1971 included both front and rear spoliers.
RPO= Regular Production Option.
Here is the main Public relations Photo set from the 1971 Camaro roll out.
Phil