well i got some more info on the monster....
evidently i was mistaken.... according to the serial number it's from ~1946, and it's a 15" (16 3/4" swing over the bed!) Regal roundhead it may/may-not be a first/second gen 15" Regal but i have to take some bed measurements
also found something out that i'm glad i know AFTER i moved it...actual weight.... 2500-2700 lbs
the 3Hp motor looks to be a later "upgrade" as these usually had a 1.5hp motor (previous owner thinks like i do...)
i gotta find out what the spindle is a threaded or L00 taper fit...i need a 4 jaw chuck for crankshafts