Does anyone know what the factory lowering specs for a 2003 F150 Harley-Davidson SuperCrew? I've been told different specs. Some say 1" font/rear and others 1" in the front & 2" in the rear. And how was this done from the factory? I'm guessing coils in the front. What about the rear...shackles or leafs or combo of both?? I want to lower my truck 1"/3" but knowing what is there already would help alot. Thanks