Gregory's and Haines do one. Number 512 from Gregory's Scientific Publications, Service and Repair Manual for the Nissan Patrol and the Ford Maverick, altho I think that was only up to about 1993, they may have a later numbered publication that covers the whole range.
Any good 4WD Accessory shop that stocks manuals should be able to order one if they don't have one in stock, but if that fails, you could try most book shops, or even go direct to Gregory's @ Universal Press Pty Ltd 904 Bourke St Waterloo 2017 NSW, the phone in 1993 was 02 698 1588
You can buy the factory work shop manuals from nissan - the ones they use in the workshop for round 200 if memory serves me correct.
They **** on the gregories ones. Covers every part of the car - inside and out.