Not for sure OhioTC18, but I think that the Z28 could be a 1971 as well. The front lacks the 1973 bumper that became manditory in 73. The rear spoiler on the 70 1/2 is diffferent and smaller than those in 1971 and 72. It is the favorite Z28 years and front end for me... After this the front ends are fugly, and plastic.
Regards, Kirk