I'm looking at buying a B17a block, and putting a b18c1 head on it, but I have no idea what internals will fit the block. I've read that B17 rods are pretty hard to find, but what if you use a different crank. Will that allow you to use different rods, and pistons? Any help will be appreciated!

 

The B17 block is the same as a B16 block (pr3).Anything that will work with a B16 block will work with a B17.
Glenn