As said,you will need 302 pistons,5.7" rods,and a 3" stroke crank. The small journal 265 & 283 cranks will need childs-albert bearing spacers (no one else makes them that I am aware of) to put the small journal crank in a 350 block.The spacers cost $300! Or find one of the 681/2- 69 302 large journal cranks,,,good luck on that one. Or a small journal 327 block,,,good luck on that one too.
Considering cost and parts available,a .060 283 would be just as nice,,,minus,ooooo,,,about 20hp or so? 283's are not that scarce yet and the parts can be found on 'ripoff-bay' Ripoff-bay parts,,,well,,,they are a gamble,you just got to "know when to walk away,know when to run" as the gambler sang.
Another alternative,if you have the do-ray-me is that the parts,including chevy 302 blocks can be bought new now.