The reason the back is higher than the front is that they are designed to be driven with a load in the back, thats what that box shaped thing on the back is for...hauling stuff. Use it as a truck and it will ride level! 
so i should drive around all the time with 400 lbs of shiat in my truck? i use my truck as a truck a lot but it is also my dayly driver and i dont need to haul things everyday... 
LOL! Won't it look dumb when it's sagging in the back like a dog taking a dump after you lift the front though? 
it sets level right now when it is unloaded. again, i dont drive alll over everyday with 500 lbs of weight in the back. i wanted my truck to ride level for daily driving.
... and yes miles, my truck does spend most of its life on the pavement, but it aint afraid of the woods and has its share of eastern WA pinstripes.

and it hauls plenty of dead *censored*!