Did my first oil change on the car since successfully rebuilding the engine last night, and no issues. The oil looked good, actually perfectly normal… no evidence of coolant seepage or metallic flakes. It was making lifter noise after a spirited drive, which seems to be its way of informing me that the oil needs to be changed. Now after changing it, when it’s hot I am getting 25 psi @ idle and about 65psi @ 3k, so the bearing clearance is spot on. I also replaced the thermostat, oil pressure sender, both halfshaft axles, and the upper engine mount (aka dogbone). The car is running very, very well. At this point all it needs is a new steering rack/boot and pump.