[Dingfodgy]

If you like the big window and the condition of the cabs are equal- I don't see why you wouldn't do it. My only reason for keeping my rusty-a$$ small window cab is that it clearly indentifies my truck as a one year only '67. I also have a '67 CST with the optional big back glass, I like it too, but it isn't as immediately identifiable as the small window.