"Cool so I can make my own double throwdown, superwamidyne billet head only for my self and run over the class."
Your welding skills and manifolds are works of art, so I would say yes. I don't know how the rules read now, but if the Kaufman's can run essentially "factory experimental" heads, than your own billet design should also be allowed. Only thing left to do is design, cut a set out, and test them. Heads-up means run what you got and hope you have enough. That's why we match race, it's always heads-up.
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