The 34 through 38 beds were 45" between the box sides. I have the original body prints from the Indianaoplis body plant for the 34-36 1/2 and 1.5 ton trucks. Most of the boards as I remember are about 7.25 inches wide. The two outer boards are a little narrorer. 34-36 boards were painted body color with a black stain/paint underside.
