When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Second gen Firebirds came from the factory with Olds motors. Third gen did not. I do not know the details of the third gen motor mounts. I know they did use the regular Chevy clamshell frame mounts. You MIGHT be able to use the 77-79 Trans Am motor brackets to mate with these, but I don't know for sure.