NISSAN 5 SPEED DIESEL TRANSMISSION
Possible option for 1600 and 2000 roadsters

 Thanx to Daryl Smith for this research
 

The 1600 u-joint slides into either the 1600 4-speed or the 5-speed diesel transmission

The diesel transmission mount is 2" farther back on the tail-shaft than it is on the roadster 4 or 5 speed transmissions.

The shift lever appears to come out 2" forward of where the shift lever on the 1600 4-speed transmission is located.

The speedometer connection is farther back, and on the opposite side of the transmission case.  A longer speedo cable would be needed.