Nissan Original Parts Numbers

[Vintage Dreams]

I own three wedding cars based on LTI Fairway Driver cab with Nissan 2.7l diesel engine and vacuum gearbox.  I am trying to source a modulator valve and torque converter for the vacuum gearbox and can probably get the parts from the USA if I could find out the Nissan original part numbers.  I have the LTI numbers but these are no good! 

I have been told that this gearbox featured in many Nissan models:

They say this is gear box known as E4N71B with applications for:

 

        1984–1989 Nissan 300ZX

        1984–1989 Dodge/Chrysler Conquest

        1986–1990 Nissan Skyline[1]

        1986–1988 Holden Commodore (VL), 3.0-liter models[2]

        1987–1988 Nissan 200SX

        1984–1986 Nissan Laurel

        1986–1987 Nissan Pick Up

        1989–1995 Mazda MPV

        1988– 1996 London Taxi Fairway and Fairway Driver

Can you help me at all or give me a steer?