It's' all in the bushes? Hope so!

[Lovelybus]

Hi, I think the resource is in here somewhere but I've not found it, so my apologies if I'm repeating but I'm at my wits end.
I have a 2001 S8 which I love, but I've been chasing a slight wobble on braking that's driving me crazy - feels like it's on the back end?

All Wheels balanced and aligned
All New tyres
New discs, pads hoses and calipers refurbed.
4 wheel alignment done.

I've been told that it could be lower arm bushes, but they are NLA for my D2.
Rumour is that there's an A6 that fits/
Or preferably, I'll get them all replaced. If one is gone, the other can't be far behind? Or any other suggestions?

would this work? Anyone tried them?
https://www.strongflex.eu/en/a8-d2-f..._diameter-18mm

any help would be so gratefully received - as it's my daily driver.