Try this website.
[roadmasterinc.com]RoadmasterInc.com
They also sell a tow shield, and later came out with another skirt type thing that really protects the towed vehicle from rocks.
Blue Ox is the other manufacture.
You should be able to find towing guides for several years worth of trucks. You might also consider a Honda CRV. I had a 99, and the seats where a bit thin in that model year. I road in the back seat of a later model, 2004 or 03 I think? I am 6'4" and the driver was a little shorter, so I guess the seat was a bit forward, and I was comfortable in the back seat.
The CRV has room for more stuff inside of it.
Did you already get a copy of "Milepost?" IT is a great book to study the few months before going to Alaska. I agree that I would not want to tow a huge trailer all the way to Alaska. And towing the Mini might not be such a great idea, even if she was not so 'attached' to the paint, and getting dings in a car, that is so low to the ground, and probably not great for that use.
Good luck!
Fred.