Jeff at FAST racing. He can usually turn a bore around in 2-3 days depending on how much port work he has lined up. Also, he can get you a piston, chamfer the ports, and size your rings before sending back. Bore is 50, ring sizing is 10, chamfer is 10 then you pay for the piston he orders and shipping both ways. Good deal if you ask me. Oh and I recommend a wiseco pro-lite.