I don't know about the rest of these guys, but I never assume anything when it comes to building a motor. I measure everything and in the case of pistons and rings, I talk to the manufacturer and get the recommended gaps for the application I'm building. Leave nothing to chance and you'll have no bad encounters.

Just like with cams. NEVER, NEVER purchase a cam based on the information you get on this or any other forum. Many of us can get you close and you can compare cams from grinder to grinder based on the knowledge gained here, but before you lay down your hard-earned green, talk with a tech at the cam grinder, not a tech at summit or jegs.