Not off hand, it was just a bit of cut round bar with the pin hole size drilled close to the edge . It took place of the rubber locater ring bit which got cut off. USA do it a lot which is where I got the idea . I've even ovalled the locater hole in the diff platform but that was last ditch attempt.
If you can get away without any mods that would be fantastic.

Big question, are the arch lips rolled?

Big hole on the diff is 28mm and the leaf pin bolt size is 18mm. Hope this helps

Quick update, got a few more hours today and wrapped up installing the pedals and booster tower. I had to clean up and paint the brake rod and pivot bracket too as they were looking tired.
 

 
Then it was putting it together and getting it situated, the studs on the pedal box itself are a bit cocked so getting it in was a bit of a mission, got there in the end though. 
 

 

 
Getting the new brake rod boot situated in the firewall wasnt as bad as I thought it would be, just needed some elbow grease. Also the left front wheels studs got some time in the bath, they're ready to go on but the nut I was using to pull them in is getting a little notchy so I need to grab a new one from the fasteners before finishing them up.