I noticed that my truck sits kind of low in the back. Does anyone know the cause of this? Im thinking about lowering it about 2 inches and putting nitro slammers on. Does anyone know whos got good deals on rims? Im looking at the KMC Venoms, or Clockers...preferably 18x10...maybe 20's if I find a deal. Im just a bit concerned about them grinding into the wheelwells...