Hi Rob, first of all welcome! as for the towbar fitment, yes rear bar will need to come off. bottom of the bumper needs to be cut out for the tongue to go into the towbar itself. if i remember the tow hooks also need to be removed so the towbar will fit, undercover panels need to be trimmed aswell. that's all i can remember for fitting a genuine kluger bar, so i will be assuming it would be very similar when fitting the hayman reese one