Yamaha XJ600 Engine Build

A friend was clearing out his yard and he offered us this engine at no cost. We decided to tear it down and see what the internals look like. I was used as a test piece for vapour blasting and subsequently left outside in the elements. So far a little rust build up in 2 cylinders and a lot of vapour medium in and around engine. It will need a thorough clean and wash down to remove any grit left behind. Could be a runner or just another fun project?