Hey Rich, Have never seen any of those intakes before. Both look well thought out.
they are some stout pieces. all motor mike and R/T ernie have made their share of great manifolds. the air flow should have no turbulance here at all
i have contact info for both those guys if you are interested. not sure how much r/t ernie is still building but i know mike is still very much at it. r/t ernie built my first intake manifold and both my turbo manifolds.
both done by rt ernie
these were done by mike. if i were to do it again he would build my intake, exhaust manifold, and port my head. my intake was built off a stock manifold. i myself am not a huge fan of darrell cox.