help needed on shocks and linkage

[A8 Owner]

Hi all this could go under so many different places so put it here to play it safe LOL
right need some rear shocks for Mrs 01 plate 3.7 sport
best i found is £169 + p&p straight from bilstein. euro car parts r showing they dont do the sport
Also Mrs had a squeak creeking thought it was front but its from rear back susp driver side they found one shock not good but they said the queak is the rear linkage on same side, lifted it up on ramp one pushed car up and down other put there hand on the linkage where they said they can feel strong vibs poss rusty when they did the same on the other side it was as no where as bad.

I havnt had time to look myself but just wondered if any one got a exploded view of this linkage and poss part numbers so i got a idea what im looking for and get rough idea of costs of part.
Labour wise wouldnt of thought it would take that long.