S
Last year I was looking for a sled to run up the the UP with. Found a 98' AC powder special 600efi 136" for $750. And it just had the 600 rebuild by a dealer. Went through it with a fine tooth comb and put $200 into it in bearings, belt. And she was ready to go. So for under a grand you may get lucky.
Only problem I never made it up to the UP last year. Hopefully this year!
Good find, 600 EFIs are great little motors!