Thanks guys for all the info. At the jegs.com site they do show 3 choices for headers on the 37-62, 216/235/261/ cid inline sixes: Stainless steel, painted, and ceramic coated. From what I hear from everyone, the Fenton cast iron is the way to go. My 54 is original, so it must have the 4:11 rear-end, very slow, so most of my driving will be 50 and under. If the muffler is not straight through, will the sound be as good under 2300 rpm as straight? The glass packs or flowmasters may be the best choices.
At 2300 rpm with the original rear end, how fast will the vehicle be going? PTR
