Thanks, Bruce, I'd love to see the Mercruiser cover in person. And as a matter of fact, I am planning on using roller rockers. Crower makes some stainless steel roller rockers for Chevy 194-292 sixes that sound real interesting. They're 1.75 ratio and are available for both 3/8 and 7/16 stud sizes. Crower part # is 73629-12 for the 3/8 rocker studs, and 73631-12 for the 7/16 studs. I'll probably try and catch up with you after Christmas.