Thought I'd give an update. I've gotten the front brakes rebuilt and gave my best shot at bleeding. Pedal goes to floor but if I keep pumping, I eventually get a stiff pedal. The master cylinder keeps drinking fluid and I couldn't figure out where it was all going...until the next morning I found a puddle at the left rear wheel. Guess I need to rebuild the rear brakes too.
Attached are a few pictures of the rear backing plates. 3B found some part numbers for rear wheel cylinders, WC37095 or WC37096, but the mounting hole orientation looks different than what I have.
3B, do you have any thoughts on this?
In the meantime, I'll work on pulling the rear wheel cylinders to inspect.
