Except that brochure is for the Series IIa 1 Ton.
The 1 Ton models were essentially the same chassis as the Oz military SIIa and SIII but in the case of the SIIa with the civvy rear cross member). the SIIa had ENV 4.7:1 diffs ex-SIIa 109 forward control models as well as low ratio all helical transfer box, low ratio steering box and 3"wide front brakes also ex-109FC/
The SIII 1 Ton had Salisbury front and rear but the front Sals was deleted mid production. The all helical transfer was continued but with the all synchro main gearbox.
As for the 9.00 tyres on Oz military Landies, this was part of the original planning and the reason the Oz military had the raised suspension chassis, However the design anticipated a different gearbox and transfer which never went into production. I think you will find references to that part of the design development in the section on the website dedicated to the SII/SIIa ambulance.
As for the cut guards See John Bamford's comments at
http://remlr.com/john-bamford.htmlJohn was also able to shed some light onto the reason why the Australian Army Land Rovers adopted the square cut guards instead of retaining the normal rounded ones.
I can tell you exactly why the mudguards were changed, because I was responsible for the change. ...
... The idea of the cut away mudguards was to make it much easier to get around the tyres and into the mudguard recesses to dig such soil out. The cut away mudguards were then introduced in all the Australian Army Land Rovers.
The cut guards are not required for the 9.00 tyres because neither of the 1 Ton models have cut guards.
