decided I'm going to rebuild my sled, pistons and rings. Before I order everything I want to make sure it's a 600, a friend of mine said it looked like a 700. How do you tell that? I was just going to look for engine numbers and run em. Also what if it's been gone through before and bored out, how would I figure that out? Also what else do I need to know before getting into this? Will I have to time it after? and how do I brake it in once done? and does anyone know the torque specs on the jugs and cap? Thanks.