http://www.royaltruckbody.com/ is located in Paramont CA, not to far from you.
I also had a El Tec body on one of the trucks, and installed a top box cover at their factory, within 20 minute drive of Long Beach CA. You can stop by both locations, and talk with a sales rep. They will know the laws, such as any requirements to stop at a scale in California or any other state. I am pretty sure that a 14,000 GVWR pickup - no matter what body is on it can bypass the scales in most states. Some states require pickups to stop at the scales, if over 10,000 GVWR, so you might have to stop in certain states.
Good luck,
Fred.
