I have a 77 f-150 with a 460 and c6. The previous owner disconnected or removed most of the emission controls. It has a EGR but the vacuum line is disconnected. Also has a carbon canister but the line coming up to the engine is cut in half. The PVC valve has 1 of the 2 fittings used. Unfortunately Oregon still make these older truck pass emission. Can anyone help me out with what this engine came with from the factory.