There are a few small differences, but they are basically the same cab. I used a 1959 Chevy grain truck cab to replace the cab on my 1955 Cameo. The 1959 cab was a small window, so it had to be converted to a big window. If it had already been a big window cab, this would not have been needed. Otherwise, two of the hood hinge bolt holes are in different places, and the area of the cowl where the wiper motor bolts on is slightly different.
Yes its already a big window, I was wondering if the doors are the same as the fit is poor. Thanks Kevin