One thing off the list - it wasn't the rear caliper leaking, it was the axle shaft seal. Replaced that, everything should be good. Got the engine running with open headers. No obvious leaks on the power steering and the supposedly rebuilt pump does not make any funny noises, for now I call this a win. Cooling system has the heater core bypassed. It was leaking through the threads of the temp switch in the thermostat housing. I had not put in antifreeze yet, so it was easy to drain the system and seal the switch up with teflon tape. Still, brakes and clutch need to be bled.