I have an elderly precursor of the Kari-tech loader. It is suitable for a car, rather than a van. It is made of steel rather than aluminium. It will need a bit of TLC ( has rust in patches,needs new fasteners/pegs). It works on square section roof bars.It must be picked up (South Cumbria). Willing to swap for a small firebox, or a decent folding saw (to replace one I bought recently that simply fell apart !!), or a teen size (or XS adult) paddling jacket,and / or trousers ....or anything else that you could persuade me would be useful.
Happy to photograph it and email said photograph if anyone is interested - PM me with an email address.