They can have a 4 cyl diesel which has its own parts or the later ones have a 6 cyl diesel which probably share those parts with the same engine fitted to the Patrol diesel of similar age.
The information plate is fitted to the side of the drivers seat base. Get the all numbers off that and go to the usual suppliers and ask them. With the required information you can get them to look things up for you. Even the internet may help if you have the information