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390 gt exhaust
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  1. Classic Cougar Tech
    Would a 1968 GT 390 (Cougar produced 12/19/1967) have a solid manifold spacer (part no. C6OZ-9A435-A versus a manifold heat riser valve part no C6OZ-9A427-D on the passengar side exhaust manifold? The Master Lincoln Mercury Parts book is somewhat confusing on this matter. I am trying to go...
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