There is a research topic over at CRG about the holes in the trunk lid. For the emblem they were stamped out and all other holes were drilled on the line.
http://www.camaros.org/forum/index.php?topic=3752.0
This one is dated before the Firebirds came to Norwood so there shouldn't be a mixup. The trunklid bracing on 69 Camaros had the holes for mounting the Trans Am wing from around 01A or maybe earlier. Yours don't have that. It could be a replacement lid you have there.
Jan