Highest flowing sbm heads?

You are 100% right. I posted on this thread, which I never do because of peoples reactions, to help you gain some knowledge. The best thing you can do is not listen to anyone here. Me included. When you are ready to do it call Brian at IMM or Brett Miller. Those 2 will steer you in the right direction. Also, go on YouTube and watch Eric Weingartner. He is a Chevy guy but his knowledge applies to every head. I can tell you this though. CFM does not equate to horsepower. Its a good indicator but its only 20% of the info. Chamber design is huge and if you look at all that's out there from the Chinese heads or edelbrocks you find the chamber is a disaster. This hurts power big time. Just another piece of the puzzle. You will not find a cheap head that flows 350 cfm. You will need a W variety head with expensive parts to go with.