Do you mean you are dead set on the 360 or you are all set not going with it?
Just a heads up, I have a 340 for sale in the Mechanical Parts section. I have the block, rotating assembly, windage tray, and you might be able to convince me to sell the heads too.
Looks like it just needs a light hone, new bearings and rings, and you'd be all set. You just can't beat a well-built 340 either.
Just thought I'd mention it. Good luck with whatever you choose.
-Mike