small block stroker questions

[chargerbr549]

I am a big block fan and have a 512 shortblock assembled sofar but I don't know much about smallblock strokers, a friend of mine just bought a .060 rough bored 340 that he was thinking about putting in a 4 inch crank kit, is there a sight with that sells the kits and has some information what kits are available and what grinding and clearance issues a person might run into?

Kevin