spent another couple of hours on it today.
Alternator before...
Alternator after...
Sump before...
Sump after...
Spent a bit of time on one of the calipers (it seemed to have about 5 coats of Halfords cheapest brake paint)
and because I'm impatient I did a tiny bit of the box to see how it will come up. It's going to take days to get it done.