Well, I did my 95" build myself. Fired on the first crank.?prty: I want to thank Dewey and Steve(HDWrench) for the technical assistance. Also want to thank Steve for the quick turn around on my parts. I went with the fairly common 95", 37g, 9.7:1 comp. set-up. I did not port the heads based on Dewey's thought that it's really not needed for 06 heads. Based on what I saw with mine apart and compared to pics I have seen of earlier TC heads I'd say unless you want to squeeze that last HP or two out he's right. The ports and passages are wide open with no restrictions and I had absolutely no casting flash or other oddities in mine. Once I get the miles on it I'll dyno it and see how much I actually gave up by not porting.