High flow exhaust Manifolds?

moparmat2000 said
Yep 68-71 340 hi po manifolds. From what I understand these flow about as good as shortie headers. They are pricey nowadays and originaks are in limited supply. As hemisedan stated theres repops of them out there if casting numbers and originality dont interest you. I dont believe the repops come with a heat riser flap or the holes drilled for one. The bosses are cast in for a heat riser however.
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Yeah, I dont really care if they are original. It's a 318 so it wouldnt be original anyway! Okay, from what everybody has said I'll be on the look out for some hi po exhaust manifolds, I appreciate everybody's help! It's awesome being part of fabo where everyone is willing to lend some advice!