Finally got the release bearing Im after. You could use this straight out of the box, but I would recommend a spacer be made up to fit over the gearbox nose so the bearing is located concentrically
The release bearing on the right. It slides over the gearbox nose, no bolts needed.
The bearing sitting in place. you only need to replace one bolt with this locating pin. Pretty simple.
Once I get this mounted and tested, I will post up some results