stabiliser newbie help

Hi all, just a question for you, we have got a Lunar clubman 400/2 1993  with a KNOTT hitch assembly and we are looking to fit a alko/winterhoff type stabiliser, will these type fit my hitch head or will they only fit alko chassis types because the alko types seem to be fixed with two bolts in the side and mine has one on side and one on top. Cheers all....