79 firebird mounts, if you want headers that fit... you have to have them made. a 69 GTO d-port header is close you have to move one tube, contact Ed Quay he specializes in them... sells tons of bolt on parts and roll cages keep the factory style rear suspension... just change it to chrome molly ask Ed for a 82-92 catalog 1-610-323-9560 tell him john Bailey sent ya!!!