I thought it would just be insert spring and single bolt to install?Shimano tech docs should give you alternatives and part nos
https://si.shimano.com/en/manual/search?input_model=rd-m960
As a rule it'sa pita and you're better off getting a complete derailleur, but if you enjoy a challenge...
I thought it would just be insert spring and single bolt to install?
I did see something along those lines too, but can't remember where.I'm sure I saw a 9speed XTR r/mech FS the other day with an XT 735 era cage & jockey wheels attached. It might've been here or could have been the 'bay. It caught my attention for that reason hence.....