Andy, Are you using an intake with a 4150 mounting pad and then the Wilson adapter?
It seems that although these manifolds can be had with the larger 4500 mounting that
everyone funnels it down. Something about velocity?
No, I use the Mopar 4500 M1 intake. It is a very good intake but most people don't seem to know it exists. Mopar doesn't even charge very much money for it so it is a super good deal. I'm running it right out of the box although I could pick up some power if I did a gasket match.