JHOT's stuff is usually really good. I live like 10min from them, my buddy's wife works there, and my wife used to work there. They're good peeps. Most of the 4G63s they get are 7-bolts. UNLESS they came from a Galant VR4. That's a 6-bolt that will be a direct swap for a 1G.

And MR.org, the NA 2G is the one that's a pain in the ass to swap a 4G63T into, because it came with a 420A Neon engine. The NA 1Gs either came with 4G93 or 4G63s...both of which are easy to switch with a 4G63T.