We finally got someone at INDY to tell us that they have successfully cut the spring seats in these heads up to .100" We have updated our tech article to reflect this. This is GOOD NEWS! This is a great head and we have people waiting to get them. We still feel it will be very hard to get much more than a 1.725" installed height without sacrificing valvetrain geometry but this is going to be a great head for 90% of the guys out there needing an iron head. We have them in stock ready to go. We offer them with stock valves, oversize valves, super prepped and fully ported. Check out the website or give us a call.
Kevin @ Hughes