360 questions

This is quite a wealth of information coming my way, thanks!

As far as power goes, I don't have a specific goal. Basically, I have a potentially free 360 block (depending on what dad ends up doing with the truck) and I'd be willing to give it a thorough (patient!) rebuild while I run the 318. Basically, I was thinking pistons, heads, intake off my 318 (RPM Air-Gap), and small tube headers off the 318, and of course a new bumpstick. It'd be awesome to be able to say that I have 400 horses under my hood (though I like torque more), but I don't want to rob a bank to be able to say that.

The engine mounts have me a bit confused. Would the ones on my car now work or did I understand that 340s and 360s used different mounts? If so, that's just a swapping deal, right? No kind of fabrication?

Thanks again, this has been really helpful!