Thanks for all the advice. It's a 350 block and a set of 305 heads that I have. The guy that I was planning on going to for the machine work said it may cost $1000 just to get the block machined and reassembled right, depending on what it needs. After I heard that I started thinking crate engines. There is no way that I could get a pair of new heads, a camshaft, a stall converter, and possibly an intake and a carb for $500. Is this guy overestimating on the machineing and assembly?