I'm actually getting parts together for this brake setup, and the one hiccup I've run across is that while the calipers seem to have been used with minimal changes if any on a lot of bikes, there seems to be only a few bikes that used that particular left hand bracket; the '81-'82 DOHC CB750F and 900F, and the '82 Goldwing.
Someone please correct me if that's incorrect.