they occasionally come up on ebay, briefly there are a couple of cross bars accross above the front seats with normal gutter mounts above the doors, then the rear rack is supported by this at the front and by two legs that extend down the rear pillars and are i think bolted through the pillars about half way down. i think ive seen one where the rear legs went right bown to the rear bumper. u occasionally see landrovers with extended racks supported from the front bumper.