This is an oddball stroke crank and as far as I know, there are no off the shelf piston/rod combinations to make it work. The block deck height on your 350 in 9.025" if the block is virgin and has never been decked, so you need to add up a "stack" of parts that will get you close to that.

The radius of your crank is 1.5625". A 350 piston has a piston compression height of 1.560". Oliver makes a 5.875" rod for the SBC. Add this stack up and get 8.9975", close enough for a 0.027" piston deck height or you could cut the decks to 8.9975" for a zero deck motor. I suspect that by the time you find out what a set of Oliver rods will cost, you'll lose interest and sell the crank to a roundy-round racer who can afford high-buck rods or custom pistons with off the shelf rods.