Yes I'm J. Allen Sherman, same guy...lol...the exhaust bolt pattern is but one of MANY hurdles on this project. We had planned to re drill the bolts on the exhaust flange in our CNC mill but we didn't do it on ray and Jason's engine for fear of creating a fit issue for the headers in the car. No one makes a head stud kit for the engine so I made up a kit myself using arp parts that if anyone needs I can supply. The Hughes rocker system is a nice product, but there are some modifications to them necessary to make them optimal. Edelbrock did a really excellent job on the ports, valve angle, and the complete design of the head and the super victor intake is a nice intake and a really great intake after some porting. All in all there's a lot of potential with these heads and intake but it's not a pull it out the box and bolt it on package.