I finally replaced the craptacular shocks the PO installed with some sweet Tokico's (thanks @beno). Not only is the truck riding better than ever, it seems taller. When we put on the new shocks we noticed that the springs were OME, but since applying winter weatherproofing, I can't tell if there's any other markings. Anyway, I attached a pic and for reference, the distance from the outer center of the wheel well to the ground is 36" and the distance from the center of the outer wheel well to the tire is about 3 inches. The truck's sitting on 285's. Thanks for your input!