John M, The divider wall in the intake port is progressively thicker as you move closer to the head bolt. We will mill the intake flange on the head approximately .500" (I believe you milled yours also) and thus we will end up with about .160" of divider wall thickness. We will run the Tiger intake with this set...plus we are looking at milling about .250" from the flange of the manifold for proper fit. And yes we were thin at the spark plug access hole on the end ports so we added some material before tracing to allow adequate thickness in the cnc ports. Test port was then welded and smoothed. Looking at exhaust flange thickness at the roof of the exit for some possible material add there.
John K, How goes it? No structural issues with these. Darin has studied and measured these and gave the thumbs up so we went forward. Looking forward to seeing your Lemans out and about...
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