Cab parts-big truck vs short stepside

[Yellow Cheyenne]

I'm considering using a 2 ton truck cab that is supposed to be in pretty good shape-maybe a small pin hole in one cab corner. My dad bought his pickup new in 56 and I would like to retain the cab, but know if I start trying to repair all of the rust it will take more time and money and be less likely to be completed than just replacing it. As stated earlier, the grain trucks were typically brought out of the shed only for harvest then put away for the rest of the year so the rust is a lot less. From what I think I've been able to figure out, the late 55's and 56's use the same fender and hood. A 57 fender will work with a little bit of metal work at the outside edges of the grill. I know the 58' and 59's have the dual headlights so the fenders are different. For now, the cab and doors are my main concern. Didn't want to buy and refinish them only to find something is different.

I can also see the 2 ton truck fenders, grill and I believe bumper are different from the half tons.

Thanks for the responses.

Randy