So I owned a fusion for a short time a few years back. 06 bought with 7500 miles and cracked a piston at just over 8k. Got the sled for cheap so I unloaded it and bought a pro r switchback. Now current situation is my brother in law is looking to get into snowmobiling and I recommended he not dive into it with a brand new sled which he wouldn't right now anyway but I could see him upgrading in a few seasons if he really likes it (I took him up to houghton last year and let him ride one of my switchbacks so he does like it). He is about 6 foot 4 and around 275 pounds. We looked at a 2006 fusion 600 with 3500 miles today. Super clean all stock never even had studs. It's at a dealer and they want $3000 (so far they are only willing to go down to $2900). It has a gas tank bag, windshield bag and comes with a spare belt. They replaced the carbides with 4" woody single carbides and replaced spark plugs, chaincase oil and hifax. Everything seems to check out. If he bought this I recommended he buy a stiffer rear spring set, what do you guys think? Anyone around his size riding this sled? Also looking for an unbiased opinion, would he be better off looking at a different sled for around $3k? I've seen 900 fusions, some 700 fusions, AC f6, f5, f7 (2004-2007), skidoo 500ss sleds for around the same price. Maybe even some Yamaha sleds. What do you guys think? And anything else we should look for on this fusion 600 or if he looks at a 900?