bravo one drive
 

can you put an{older bravo} bravo one upper with out the oil hole on a{newer bravo} bravo one lower with the oil hole thanks mike

That will block off the flow to the upper pinion gear bearings.. On the old upper there is an extra hole in the main vertical shaft cavity. You could plug the upper, or if the lower has an island with no hole, then add the quad seal and it should block it off.. but you need to duplicate the oil transfer hole in the old upper.. Not the best way to do it.. I would look for a newer lower case. there are many out there on the used market..
Hope that helps.
Dick