Yep, you gotta use plasti-gauge. I'm in the process of building my 413. Just did all my clearances today. I just like to know myself that everything is checking out fine, other then building the engine, and later on having the thought in the back of your head saying, man I hope things are good.

My thoughts on that. Oh, and im using Clevite bearings. I'm sure they'll hold up fine, although king is a better made bearing. On my next build (a nice 350 for my dads truck) im gonna try king