Yeah it looks like you didn't come out too good on that deal
It's a good thing you decided to check it out. I've heard that using the 5.565 rods with the 350 pistons leave the pistons down in the hole a ways. Just something to consider if you need to replace some parts. Oh, and there isn't anything wrong with your calipers....those are 1.94 intake valves.....just a set of stock 882's