And it is designed for the B11/N12 E16 motor. It uses a V-belt as opposed to a serpentine belt. You have to find a pulley for your alternator and find a V-belt water pump pulley.
Correct. I did find the aforementioned pulley in my Nissan Motorsports book and it was in the B11/N12 section. I'm trying to think of a very large favor I could do for a machinist friend so he would make an aluminum UDP out of a hunk of bar stock.
I have that pulley on my old e15t motor. It actually came stock on one of the early e-series motors. Back in '95 nissan motorsports used to carry a "slim pulley set" made from billet aluminum. It was to be used in conjunction with a race header that wrapped around the side of the engine instead of below it. Unfortunately, both products have been long sold out.