55-66 stepsides are the same - mount bolt holes might be slightly different cuz the frames are different between 56 and 63, but should be able to fudge it easily - I put a bed from a 62 on my 57 - which actually has a 58 frame

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature we find it attached to the rest of the world" John Muir
"When we tug a single thing on an old truck, we find it falls off" me
Some TF series details & TF heater pics & Rust-a-holics Unanimous parking lot