Until 1959 Chev used the same cab from the 1/2 ton up to the Viking 100 which was their largest offering for the year. Here is a Viking 100 I bought about a year ago.

https://get.google.com/albumarchive...JHzUNDORn?source=pwa#6429683823006034530

If you notice, it uses the standard Chev cab. Only the front end has been modified for larger tires. This makes cab restoration the same as for a pickup.