Finally got on with replacing the drums, shoes, wheel cylinders, springs and back-plates... this is after spending a week with my 'Landyman' local mechanic sorting out a new exhaust and manifold (petrol S3) - anyone else had problems getting the bolts out of the manifold? Also fitted some new rear body cross members / support struts (galvanised) and patched a few holes in the floor c/o the old (non-galv) ones! My overalls are rust-coloured now, but the Mad Cow (that's her name, technically) is almost ready for her MOT and looking a treat.
(I, on the other hand, look a bit beaten, bruised and oily!)
MC