I can get the front rubber disc here for around £80, so if a decent 2nd hand one can be got…. I do have a spare angle drive flange here attached to my spare box, when you say 12 point bolt, do you mean the 6 point nut on the centre? (Like this pic of my spare one) I’m hoping if I undo that, that the flange will slide off and I can swap over?
Saying that though my spare box is a 4z, and etka gives different part numbers.. so I think I will need that flange!
With a Dremel I and going to separate the cat from the down pipe, and will see what it looks like, but from my view parts of the flange are missing and warped.
I am/have considered fitting the cat replacement front box, but it’s the lambda. Would it work if it was in one of the downpipes?