I have been getting a little done on my 63 in between working on my buddies 67 Stang and my fighting this damn authritas pain. I actually milled my heads and started porting these 906's a few months ago. I plan to go back over to my brother's shop so I can open up the seats for these 2.14's and 1.81 valves I bought from Mancini. Then I will cut the guides and set the spring height's and finish blending the bowls to the seats and do some more polishing. Then its time to cc and see if I hit the 9.8 to 10.0 comp I plan to run. I should be right in the ballpark with the KB pistons .025 in the hole on my 400. I may have to mill a tad more and use the thicker head gasket if I come out to high as I want this to run on 93 pump. Ron