Update time. As a result of the red TC going walkies, I started working on this car again. The plan had always been to get it driveable, so that I could take it down to work and get a bit more done there. I found a spare set of rear calipers in good order, stripped and cleaned them and fitted new hoses and pads, and swapped them over one evening after work. The following evening I replaced the front section of exhaust. For some reason, the previous owner had gone to a lot of trouble to make a stainless exhaust but had only made the rear sections and left the front in mild steel. I found a 'better' radiator and had it cleaned out by my friendly local radiator man ($20 cash!) and then set about freeing off the sticking front brakes.
Today I managed to drive it down to work! It seems to go alright too, although it does run hot. It didn't boil but the temp gauge moved fairly quickly to the very top of the green section and stayed there. It's not the radiator so I'm hoping that it is just a lot of silt buildup in the block. I shall remove the motor soon, whip the side plates off and clean it all out and repaint.
BTW, what colour should the block be on a 1970 2000TC? The most original motor I had seen was a very pale green colour, almost white. But I have seen a few rebuilt motors painted blue. Any tips?
Ooh, I also bought some repro centre caps for the Cosmics off Ebay and fitted them. 8)