I have a chance to buy an 95 Arctic Cat EXT580 Mountain Cat long track which has 3700 miles on it. Not running at the moment. Rest of sled is in good shape. He wants $600. I am told they are easy to work on to rebuild top end and re a good sled. Do you think this is a good deal? I have done rebuilds on ATV 2 strokes and Polaris sleds so can do work myself to save on labour.