Hi Steve, how much were you thinking for the rear motor and arm? Got quite a few things to fix on mine, rear bushes, broken rear spring(s), doing both, one broken on bottom coil, alarm going off probably due to the same reason the interior light flickers and the hatch open warning light on dash flashes on randomly while driving. And front flexible brake pipes, brake fluid change at the same time, also need to look at the fuel pipe join under the bulkhead, it's a bit damp. Also would like to solve the boost problem the car has, bought a boost leak tester on eBay to pressurise the inlet manifold and pipes. More overtime I think!! Seems never ending just now. Had a look at the new A7 last week.... Can always dream eh??
Bruce