if money is an issue go with 4.7s in your case. Then locker in the front. Then do duals with suspension, that way you only have to do driveshafts once. I think 4.7s were one of my best mods. Dont do dual stock cases!!!! waste of money 
i dont think so, dual cases is by far the best mod i ever did, and i have stock dual cases, i wouldnt give them up for anything
