Well that S-can's the W9 idea. My whole thought process was to get them and then use them on a 48 degree block down the road, but if it requires that much milling to use on a 59 degree then I may as well just get the Indy's and go from there. Hard to pass up the 500 a piece on the W9's though. Keep seeing them on fleabay.
You might both be interested in knowing that the BA MC's I flow tested fit on a 4.030" bore on the flowbench. I believe the intake valve was a 2.125 but it may have been larger.
Anyway, I appreciate your time and the information you've both provided.
Jason.