I don�t know the answer to your question but it looks very clean so far. Nice job. I plan on doing the same thing very soon. If there are any other pictures out there of other port jobs I would love to see and compare what people are doing. The picture above is a split port head right?

98.5 Black contour // A.K.A. Frankenstein 3L Oval port swap W P&P // SVT UIM, LIM, & Cams Torsen LSD // Dual Friction // KKM // Poly Mounts // ?Mystery Mod? // Actually Running! 205 hp @ 6500RPM 180 tq @ 4250RPM