I may end up with a late 90s formula 583, the sled has been sitting alot for the last few years, but ran last season and doesn’t appear to have anything wrong with it. I am not a ski doo guy, and especially unfamiliar with stuff of this vintage. It is an S chassis, late 90s or so and I am not sure wether I am best keeping it as spare/kids sled or parting it out or selling it. Are there any common issues other than basic old sled stuff to look for? I would assume the 583 would make around 105hp, does that sound about right?