[Coolhand]

Best bet is a a salvage yard or craiglist or facebook marketplace where someone is parting out snowmobiles.

 

[kccats]

Your best bet is to go to Swap Meet this fall
Hay Days is in September
You can pick up a complete rev case and gears for $100

 

[BC_Dan]

Als Snowmobile may be able to help, too. There are other salvage yards out there, but when I needed parts for old sleds, that was my go to...

Al's Snowmobile Parts Warehouse - Snowmobile Parts, Snowmobile Parts, and More Snowmobile Parts

Snowmobile Parts, Snowmobile Parts, and More Snowmobile Parts 1964 - Present Models

www.alssnowmobile.com