428 PI Exhaust Manifold Questions

[Royce Peterson]

I think the ID # are; C6OE-9430-A & C7OE-9431-A for unibody cars, such as our Shelbys.

True, the RH manifold was revised for 1967 since the one used in Fairlanes / Comets for 1966 will hit the floor pan because it is too long for a Mustang / Cougar application. The 1967 Fairlane / Comet got a revised H pipe so the new manifold would work.