1960 chevy or GMC cab replacement

[doobiebro]

I found me a donor truck (complete) with the same yr as my 60 stepper that was totalled from the insurance company. The donor truck will need lower sheet medal and floor patches replacement but the drive train is unique. I think it is a 290 with factory automatic. I also found me a parts truck (1960 GMC) with very little or no rust on lower cab with a big back window! My question is will a 1960 chevy cab and a 1960 GMC cab interchange? Are these cabs the same? Also will my 60 Chevy dash fit on to a 60 GMC cab? Any help is greatly appreciated...