I bought one of the liftgate kits from Wildside. I don't see it on their site anymore. It is a pretty nice unit and I would recommend it(at least from the looks of it, haven't used it yet). Comes complete with everything except the door. I am still in the process of mounting it, have not really put that much time into it yet. Hope to get it finished up within the next month. Was about $8k, the next closest thing I found was $20k.
Mike