so your diffs not working, so instead of fixing it your going to spend around 7-800 quid on a winch and bumper? then you have to think about a sep. batt. split charge, batt management...
cant you just get some good recovery straps and points, and go out with someone who can pull you out if you get in trouble? winches cant always save you anyway...
your gonna need around a 9000lb winch. 12,500lb if you can afford it.
G