cocran, actually, you'd be amazed at how many parts would NOT fit that early small block. Lots of revisions made shortly after that.
I still say 70, not becouse I dislike the 59 (although, the grill does make me think of a checker cab) but the 70 will ride better, easier to work on, fairly modern in suspention and brake department (esp with a simple disc upgrade) new parts are easy to find, used parts are easy to find (wile both are almost non-existent on the 59) and the creature comeforts are either already in the 70, or added real easily. The 59 would end up being more of a custom by the time you would enjoy driving it.
Besides, vacume operated windshield wipers suck.

Oh, it was pretty cool seeing you in chat tonight phelgm.
Your turn Shawna. (slams 68)