Does anyone have any photos of their modded rear mount & x-member for fitting a 60A to their B10, that they can upload for some visual inspiration?

Do you mean the gearbox mount and the engine mounts (A14/A15) or just some images of the gearbox mount?

 
Heres one, nothing flash but I have it on good authority that the gearbox has not fallen off for a number of years
I'm in the same boat with the engine mounts...would be nice if there were some definitive plans/specs for them somewhere.

From memory I think the original mount rubber was used.

Thanks guys.  Reverse switch is already done - Benefits of buying the box from Mal! 
 
Chris, I see you've also use the original rubber mount as well. This is where I got stuck, due to the mounting holes not being wide enough to suit the 60A, but at the same time not having enough width on the original mount's bracket to drill new holes.   Did you overcome that by cutting the bracket before welding the new moutning plate on, or by removing the original bracket altogether?
 
By the way Chris, what sort of brake upgrade are you chasing for your 1200?

Ive got a set sitting in my thou waiting for the A15 I have.
 
They could be borrowed and copied if required. I have been meaning to make a few copies myself for just this purposse, but havent got round to it yet.