The 11Y is fitted with the heavy 900 X 16 split military wheels ..unique to Australia on that model I believe . Being the wheels are so heavy, the 11Y models are prone to king pin wear . The front axle is really meant to take civilian 17" wheels ( fitted to the 1940 army model ), which I think look better proportioned . The army also had the 1939 cameo grill model too ..
I junked some of those 11Y wheels years ago ... didn't fit my 11D . BTW Cliffs AWM parade pic is a 11D , the wheels are the giveaway. The 11D is 95% same as the 11Y , but is fitted with Ford passenger car type 16 " wheels ... but the rims are wider to take 7.50 tyres ..very odd - it also runs the normal small car brakes adapted to the big 1 Ton rear axle and it is listed as a 3/4 ton truck in the Ford literature .
There is one of those utes currently in France somewhere on a Cooks tour
Mike