I have a 1967 TEMPEST BODY WITH A 1967 GTO 360 HO ENGINE IN IT. i BOUGHT THIS ENGINE IN 1968, IT HAS HARDEN SEATS WITH BRONZE VALVE GUIDES. It is connected to a turbo 400 trans with heavy duty clutches. The engine idels at 700 rpm's and runs on 93 octane gas without pinging. call me at 931 265-2813.