Here are a few photos of the refurbishing of old 206's rear subframe that I have been doing recently. I would have loved to have taken the whole thing out and had it blasted and painted properly, but that was all too hard, so I simply took off everything I could, cleaned everything with wire brushes and sand paper, applied rust-killer and then painted it all by hand in-situ. A bit messy doing it that way, and lots of hours of work, but finally I have it all together again. The aim of course was to free up the rear wheel toe-in and camber adjusters so that I could fit Scooter's new kit and align the rear wheels (to avoid the wear you can see in the tyre photo), but getting rid of the surface rust was also important. Luckily, my subframe was not rusted to the extent of many of the early cars featured here recently, but I did have to use the angle grinder to get the toe-in adjusting bolts out.
By the way, for those of you interested in the ride height, I'm not sure what the range of adjustment is to compensate for camber when your springs are too low (or too high), but it isn't much. I took the trouble of packing my springs with spacers (you can see the red material in one of the photos) under the spring base to bring my ride height to the nominal 395mm wheel centre to wheel arch figure. Before the work, the figure was sitting at 385mm.