Nearly every engine on Earth uses two bolts per port. Some, like the GMs, Mopars, and AMCs with siamesed center ports, use two for those ports. Two works just fine.
And GMs, Mopars, and others with siamesed center exhaust ports, and 2 bolts per port have been known to have much more issues with header leaks than a Ford or other engine with at least 2 bolts for EVERY port. Personally, I have been installing every header bolt on a 16 bolt FE head, whether factory 428 CJ iron heads, or aftermarket aluminum, and in almost 50 years of doing so, I have NEVER had a header leak while doing so. That said, I have yet to find a set of headers that I could physically get all 32 bolts in, but I can usually get at least 28 or 29 in.
