More tools arrived today. An adjustable reamer and larger micrometer to measure drive shaft accurately.
I got the shaft diameter and adjusted the reamer to a just a bit smaller. This is where my issue began. It was a too big a cut at that size and because the reamer is slightly tapered, getting a precise cut was unreliable. I decided to sneak up on the diameter for the bushing. Here lay the most annoying aspect of this job. Because Alec Issigonis decided for giggles not to make the drive shaft removable in one piece through the subframe. I had a choice of dismantling the inner 'Pot joint' , with all the extra work, tools and materials required to split and reassemble, or I could clamber under the car multiple times to test fit the differential bushing after each reaming cut to make sure I got it super tight clearance with the drive shaft .
Guess which I did?
Anyhow I got there with bushing.
Some photos for your perusal
Im awaiting some non setting gasket sealant, so I rebuilt the other side hub with new ball joints and bearings, faster this time