The Australian Army issued specifications for all of it's purchases, from helicopters right down to tables. These specifications hold everything from what british standard colour the seats are to be, to the reference number of the Army Design Establishment drawings showing the design of the bush bar to be fitted to the vehicle. By the document numbers it seems that the specifications were updated as the vehicles progressed through their service life.

So for those interested the documents are available for download below.

Vehicles

Provisional Specification Army(Aust) 2 for Truck, Utility, 3/4 Ton, FFR, Land Rover Series 2A 109 inch WB.
Download (573 kb)

Specification Army(Aust) 7 for Truck, Utility, 1/4 ton, GS, Land Rover, Series 2A, 88 Inch WB.
Download (565 kb)

Specification Army(Aust) 13 for Truck, chassis, 3/4 ton, 4x4 G.S., Land Rover, Series 2A, 109 inch WB.
Download (563 kb)

Specification Army(Aust) 39 for Truck, Lightweight, Workshop, 3/4 ton, 4x4, GS, Land Rover Series 2A Long
Download (223 kb)

Specification Army(Aust) 47 for Truck, chassis, Fire tender, 3/4 ton, 4x4, F.S. Land Rover, Series 2A, 109 inch WB.
Download (500 kb)

Specification Army(Aust) 48 for Truck, Fire Fighting, 3/4 ton GS Fire Engine.
Download (896 kb)

Specification Army(Aust) 51 for Truck, Utility, 3/4 ton, G.S., Land Rover, Series 2A, 109 inch WB.
Download (588 kb)

Specification Army(Aust) 52 for Truck Panel, 3/4 ton, G.S., Land Rover Series 2A, 109 inch WB.
Download (501 kb)

Specification Army(Aust) 73 for Truck, chassis, 3/4 ton, 4x4, Ambulance Land Rover, Series 2A, 109 inch WB.
Download (586 kb)

Specification Army(Aust) 80 for Truck, Ambulance 4 stretcher, G.S, Land Rover Series 2, 109 inch WB.
Download (226 kb)

Specification Army(Aust) 85 for Truck, Carryall, 3/4 ton, G.S, Topographical Survey, LandRover, Series 2A, 109 inch WB.
Download (533 kb)

Specification Army(Aust) 110 for Truck, Wrecker, 3/4 ton, GS, Land Rover, Series 2A, 109 inch WB.
Download (547 kb)

Trailers and Platforms

Specification Army(Aust) 37 for Trailer, 1/2 ton, 2W, Platform Body.
Download (220 kb)

Specification Army(Aust) 71 for Trailer, Cargo, Light GS.
Download (339 kb)

Specification Army(Aust) 79 for Body, Platform Workshop, Lightweight.
Download (156 kb)

Specification Army(Aust) 83 for Tent, Lightweight Repair vehicle.
Download (163 kb)

Specification Army(Aust) 172 for Shop Equipment, Machine Shop Shelter Mounted, General Engineering.
Download (215 kb)