Right, did the G60 calipers today instead of the twin pots as these were already stripped. Will do a proper 'how to' on refurbing your calipers when I get my new seals etc (unless there already is one, but had a look and couldn't see anything).
Started out like this;

You can see that I've put some tape round the seals and put old brake pipes in as I didn't want to get grit in the calipers. Shot-blasted;

Took about 10 minutes to do each one properly, but they came up great and wouldn't like to think how long that would have taken with a wire brush!
Calipers and carriers prepped for paint;

Two coats of etch primer, pretty good improvement



Also primed the wishbones, so will paint them tomorrow.