I already do, but i only sell them on builds we do for now...I can't keep up with doing heads AND engines...I'm also working on some rocker kits for engines we build only for now, 1.65 ratio, cup adjuster, build around our import head (will also fit iron heads/edelbrock heads) and will work with pushrod oiling or std oiling. Hoping to have them available first of the year. If they work good, I'll consider selling them to the GP.