Yes, that is the case but, the original Rocket Standard and Classic have a different rear spline end. Probably the final drive has the female side so both would have to changed or make sure that they match. Eventually mine is going to go so I'm looking around. Is taking the rear shaft drive something I could do or is it better to take it to Rick at the shop?
Bit far away but I got a brand new Classic swingarm with shaft and diff from a bloke who converted Rockets from new into Trikes.
I'm not sure, but presume there is stuff all wearing parts in the swingarm itself other than the prop shaft etc. The swingarms themselves appear to be very cheap on US eBay but the prop shafts are still a high $ even used.