Gathered a bunch of notes. From a business perspective, order of headers would look like this:
1 st batch - 70-81 F body D port 1 7/8
2nd batch once 1st batch takes off - 70 - 81 Fbody O port 1 7/8 or 2"
180 degree, 3.5" collectors, 2" D ports , 1 offs , ect are neat & cool, but not feasible on the business end of things. Also, At the larger tube sizes, you'll want a 4 tube or zoomies at those power levels if said engine truly requires such.
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