I visited Mal today with the winch. Great looking workshop. Exactly the sort of workshop a thinking, old school engineer would have I reckon. Pretty happy with what he said about the winch and very happy with the service. It is the superseeded model with the brazilian bosch motor as opposed to the not so good newer chinese motor. It is new enough to have rubber seals etc that the earlier models do not have.
He is doing all the things D4D and Achjimmy suggested so I'm pretty happy. Although he did suggest that I really need to do something to the front suspension to cope with the weight once the winch is fitted....
Thanks again guys for your help