All the pre-cal2 disk brake swingarms will 'fit', meaning the unit will go between the frame lugs properly. Whether or not your brake/brake lines, wheel, centerstand, shocks, fender, DRIVESHAFT, etc also fit are matters for speculation. I know the driveshaft won't work and the wheel area might be too narrow for your rim/rubber. IIRC, the long wheelbase centerstand has interference issues and the shock angle will be radically different. The frame is 3" longer back there, so the fender and wheel will be on different centers. There is probably more that I can't think of right now.
Hope this helps.