I am helping a friend rebuild his 08 Dragon. His top end went last season and he took it in to the dealer. They torn down the top end for inspection and gave him a quote to repair it. The quote was pretty unreasonable so he decided to pick it up. He ended up renting for the rest of the season so the sled has sat in his garage since last January. I offered to install the fix kit for him so he dropped it off at my place. The crankcase was stuffed with rags to keep debris out which was good to see. Once i pulled the rags out I found that the crankcase was full of coolant. The crank hasn't seized, but it's been submerged in coolant since last January so it can be trusted. What is my best option for replacing it? Rebuild or buy a whole new assembly?