If it was a stake bed from the factory, it was (probably) originaly a cab and chassis. The cab and chassis had a narower rear end than the dually, the dually and the pickups had the same rear end width. Pickups and duallies have approx. 4' between the backing plate and the spring perch. The cab and chassis has approx 2" or less between the backing plate and the spring. the dually bed florrs are the same as a pickup, just the quarters are diferent. The inner tire won't clear the wheel well.
Edited by: Blazin at: 9/9/05 4:30 pm