At last after calling Land Rover Australia in Brisbane and asking them about part no. RAA527 tow pack with Weight Distibuting Hitch and the disco having SLS . The answer is yes i can, I have been told by many LR dealers that it is not possible at all and had started to lose faith. If you have any quiries regarding LR they have a 1800 number and I found them most helpful and eager to please.
Bigmac1947