burgie ...I,ve never seen one that had integral joints to the yokes,only fact. sealed units with no grease fittings. possible that p.o. welded them in. could have internal snap rings by the brg caps. if you cant get them apart with BFH and a vise, (heat wrench suggested), like Jolly sez, take whole shaft to a drive shaft shop or at least the joints off the shaft and they should be able to match up some thing for you

steve sr. ps that looks like a std shaft to me.