After some research I worked out that a Sunncamp ultima 180 should fit so we bought a second hand one and I've fashioned a rail to fit it so instead of a land rover item for many hundreds we have a solution for about £50. Here it is at the first trial fit
You can see from this shot that this is just tied onto the roof rack which putt it a bit our of position and too high
There was this three inch gap at the bottom which should be sorted out when I get some awning roof rail properly installed, and also one of the doors is going to be a problem with the gas canister cupboard, but that we'll have to live with as I'm not moving it
So all in all it looks positive. Some awning rail and some brackets to hold it at the right place on the back of Katy and make the canvas reach thr groubd and some sharp edges on the gas cupbaord to sort out so we don't tear it
There's a lot more to do, but every little. We do is a step forward towards a really useable camper
