Any of you guys out there in Cad power land know how much the valve centerlines were moved side ways of front to back compared to OE heads? I already have some custom pistons set up for 2.19 int and 1.88 exh. in the early style Iron heads. When I get a set of these Boogie man heads I figure I will need to recut the valve reliefs , just curious how much and in which direction the valve were moved. I can guess but thought I would ask if some one has already been down this road. Pistons now will allow for .700 lift and a good amount of duration for future exploits.