Magnum Exh manifold machining.

69_340_GTS said

Unless these are somehow special, you can buy a pair of new aftermarket (Dorman, etc...) ones for around $200-$250.

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They have the 2-1/8" outlets so in a way, they are "special". Using them for a magnum into a 65 valiant swap. Everything I've read where people have done it, they "wish" they;'d taken more off than say 3/16. That's where the 1/4" comes from.