360 questions

Ok you 360 experts, I need some help again.
The machine shop just called and told me that the block needs to go .060. He said the cylinders were cone shaped.I don't want to do that, so I started shopping for a used motor.

Well that is quite an experience! My question is, I just may go magnum, heck, why not?
What year did they quit putting both motor mount provisions on? I know my 90 3.9 only had the later style IIRC, or maybe both, heck I can't remember.

Could I put a 2000 360 in there without too much trouble? Of course I would put a four barrel, and distributor in it. What else? This is going in my 68, with a 727 etc.

What year would you pick?

Thanks in advance for the help!