Love me some Pontiwreck Ram heads! I raced a 68 Firebird for years. Had to fabricate my own headers and went with the three pipe design due to the constant battles with sealing on inner two ports being so close. I can’t tell you how many times I heard “ man dude that is the fastest Vsix I have ever seen” They would see the three pipe header and totally miss spark plug wire count or the fact the center tube was much larger than outsides. Morons!