I agree with YR more than I disagree but this is one where I have to strongly agree. Chev 23 degree stuff has 100 to maybe 1000 times the market and development behind it. Just about any Mopar guy can grab a set of W2's and make 'em flow 290-300 cfm and most of that the cylinder will actually see--'cuz the port geometry is excellent. To re-iterate YR " A decent prepped W-2 will beat the **** out of any TRUE 23* non-RR port Shivvy head" I took some artisitic license of course LOL. I'd love to go nuts on a W2 and see what shakes out--ya know--angle mill, 7-8mm valve stems, dowel shift, CNC bowl/venture shaping, etc... J.Rob