Advice needed on used crate engine

That a la 360? Looks like it but hard to tell.

If so its a roller block but most likely not a roller cam .

They also didn't have forged pistons. They were usually a .020 over sealed power hyper piston I believe.

Or is that just their short blocks they used to sell ?

That being said $500 doesn't sound bad if he will refund ya if not happy.