When i ordered my truck in mar 2008 the dealer showed me the spec sheets for ordering and the only diff btw the 250 and 350 was the badge and the rear springs. It was only 80.00 more for the 350 "package" (springs and badge). I just wondered if this was true or not. please do not answer unless you know for sure or tell me where i can find out. Im kicking myself now cause it's 600.00 now to add to the springs to bring them up 1000 lbs. air bags are a possiblity but sound to expensive to have them adjustable.