[Grant Bowker]

Just curious, did you at any time try the trick of chucking a flat screwdriver bit in a drill, removing the distributor and driving the oil pump with the drill to spread oil around? Also, is it possible that the distributor isn't seated quite deep enough in the block for the tang on the distributor shaft to engage the oil pump shaft? Since the engine ran, the distributor is engaging the camshaft but this doesn't guarantee that it is also driving the oil pump. Oil pressure should be visible when turning the motor over with the starter (particularly if the system has been primed at some time with a drill).
I would be reluctant to run any more without knowing you have oil pressure but is the gauge "known good". You could check with air if you turn the regulator on the compressor down, start at near zero and work up (looking more for a progression of pressure than absolute values).