Yeah, sheet metal intakes are often R&D projects, especially for something like a BB Mopar engine. There might be some "proven" sheet metal designs for popular SBC and BBC heads but I really doubt a person could order up a sheet metal intake for a BB Mopar and have it be better than a Wilson ported cast intake right out of the box. Maybe by the time you buy three sheet metal intakes the third version will be singing on the dyno, but I bet the first one is a door stop. About the only way to win the sheet metal intake derby is to partner up with a NHRA super stock guy and buy his year old stuff. Typically their year old stuff is better than anything else on the market.