My buddy has a 98' MXZ 500 with extras. I know he has a silencer, geared, clutched, jetted, with 2 tracks. He also had the AD Boivin upgraded sc-10 and has a lubrication setup for lubricating the slides when he raced it in radar runs. The sled has done 99 mph in 1000 feet with him on it (240lbs.) The sled is in mint condition with not a scratch on it. What do you think would be a good price for it? Oh, it has 2500 miles on it too.