I understand. Andy did say the M1 4500 worked pretty good out of the box on the TF270's, but obviously the Wilson worked M1 was better and the Wilson worked Indy was better yet or best. I'm really temped to get the M1 4500 and try it. I don't have many options for 4500 B block intakes. If the TF intake was a 4500 it would be a no brainer.