The newer trucks can use just about any fullsize set of seats. I think the ADs are just slightly narrower. I have heard getting a late model buick lesabre seat from a boneyard would work. I have GMC van seats that have plenty of room between them for my 59. I would think the room between the seats would just be a bit less on your AD. The Van seats have lumbar support, armrests, and make the 1 ton much nicer to use.
