So I found this add in the back of a bagger rag. Called the guy up and they have a kit made for swapping a late model swingarm into an early bike. It uses the HD bearings and there bushing kit to make it a 5/8" pivot shaft to match our bikes.

Anyone have any dealings with them?

One other question, I know that I need to go to a 139 tooth belt, can I stay with an 1 1/2 belt? I wont be going any wider than a 140 tire.