Hedman makes a set of three-tubers for FGFs as well as the 4-tube, but I can't for the life of me figure out why?

Why cut down 25 percent of the available manifold flow? There are four ports on each side, why would anyone want to force four into three?

A fellow FGFer PMed me today about headers versus RARE manifolds. Don't get me wrong, I love the Hedman headers on my '68. But if given a choice between those and a new set of RARE long-branch, I'd install the RAREs in a heart-beat.

I'll probably convert (revert?) to LB RARE manifolds this winter. The headers just put out too much heat during hot summer days and nights here for me. The heat takes its toll on ALL components under the hood.