Enjoy and keep us posted on your adventure, before, during and after.
My advice is to follow Billy's advice and also bring a spare electric fuel pump and everything in the ignition system along with some valve system spares. Probably little need to bring things that are easy to purchase along the way.
I am not sure changing the rear end every day is something you will be glad you did by the end of the week. I would go with the 4.10s and get the tallest street tire you can and deal with it. Some will not agree but I would also run a street (rain) tire on the road.
I won't be running with my son this year but we are both coming to St. Louis to spectate and see a lot of friends.
