The front and rear
Uhaul windows are almost exactly the same size as
Scamp windows. I replaced my rear window with one from
Scamp. You should be able to use a
Scamp window cover (rock guard) on your
Uhaul, although I've heard they are just a flat piece of
fiberglass with edge trim. Not all Uhauls had the rock guard, ours does not. For bed cushions, if you are going to leave the bed made up all the time you can use a piece of foam for a mattress as we did.