My impression was that the 68 and 67 were the same EXCEPT the 68 has an extra bracket that spans across the turn signal lens on the fronts. The rears are 100% the same.
I am not sure the ebay listing are anything for a firebird.
68' Firebird 400 convertible, numbers matching, solar red w/ deluxe parchment interior. 66' Pontiac Ventura Hardtop 66' Pontiac Catalina Convertible
