I've just fitted the towball mounting bracket ( courtesy of gattim ) to my 2004 Triton. I may have a problem, I have fitted it with the towball mounted to the rear of the tow-hitch. I test fitted an Alko type towball to the bracket and found that it fouls the gas locker door which cannot be opened with the ball in place though it does clear the mounting plate , just. I am trying to source one of the old style tow balls with a short neck to see if that works but no luck so far.
If I can't find one I shall try reversing the bracket as per Eribanut, this will obviously clear the gas locker door but will have to ensure it doesn't hit the Land Rover whilst turning and reverse manoeuvring.
Btw, I think later Tritons would be ok re the gas locker door clearance as they appear to have a longer drawbar.
Chris