Hi ,
Typical to any used 6x6
Always Always allow for some work on a recently purchased 6x6
Ball park figure allow $1000
This should get u good bearings ,axles sorted out ,chains as required , tensioners repaired, engine and transmission serviced ,new cvt belt , be a good idea to service clutches [remove and inspect ]
As long as u treat the whole machine as requiring a service and not just individual components ,I have found this is the best attitude to have. This yields the most reliable machine .
A new body gasket for the upper and lower halves . Install small bolts every 4-6 inch and a new /used rubber rub rail . That will seal the body halves at least .
tomo