Not enough people have the necessary skills (me!) and/or tools and/or workshop space

Looking forward to the update on the poly bushes. Great work. +++

What is the process of aligning the rear subframe
 

Are there pins or something as a guide like for the front subframe?

Yes there are 2 of them, i think MikkiJayne made some.

When I had my car aligned after I did all the work, the position of the front subframe was adjusted slightly to balance out the camber. I guess if you used locating pins then you would not be able to do this (and there is no other stock way of adjusting this). Of course if I had used locating pins then maybe it would not have needed to be adjusted…?! :Confused:

The locating pins for the front and are just to get it in the factory default position. They almost always need moving afterwards to get camber and caster correct, so if yours just needed slight adjustment you must have eyeballed it pretty well +++ The pins come out afterwards.

The rear doesn't have pins. It has sockets in the rear mount hardpoints, but the sockets are slightly larger than the hole in the bush so I'm not quite sure what the factory tool looked like for these. I 3d print one-use bushings each time I do the job, and they just stay in place sandwiched between the subframe and the body. Aftermarket bushes that I've seen tend to be even smaller than the factory ones so there's no way to get a tool out again afterwards.

NLA rear trailing arm shock absorber bush is back in stock on autodoc. I suggest anyone planning to do a subframe refurb to get 2 before they dissapear again:

https://www.autodoc.co.uk/febest/14133184

new old stock rear diff mount assembly:

https://www.ebay.co.uk/itm/364107695...Bk9SR4KYj6vRYQ