Hmmmm.... now it''s 3 to 2...
I will be using a R&D flex coupling between the shaft coupler and the tranny. I had originally intended to use the existing flex coupling (older rubber and metal coupler) with the new flex coupling but it pushed the shaft back too far and interfered with the rudder. Could not use the existing flex coupler as it was not thru bolted and I would have had to pull the tranny flange off to capture the bolts that would go into the old coupler. Putting the R&D flex coupler between them would have fixed THAT problem. Didn't want to mess with the brand new motor/tranny, though.