Never thought about that...would 360 manifolds work? Pretty sure I have a pair. Think from a cordoba though. Good idea to help get this on the rd cheap! Sitting since 1982 so will need fuel system gone through.
If you use 360 manifolds you won't be able to "just simply" swap them out later because the pipes/flanges where the exhaust hooks up is different on 360 manifolds. What "Mattax" was talking about was getting a pair (any pair) of 340 manifolds (date doesn't matter), get your car running and driving then later when you find a "correct date" manifold set you can swap them out and sell the old set. They don't really lose any value over time so you can most (or more) of your money back anyway..
