Frame rails

[Roger in Republic]

This is a question that jumps generations. I am thinking about replacing my 1977 C10 with a newer truck. I want to go newer than 87 to replace my plow truck. The question is : Is the distance between the frame rails different between the 73-87 and the newer models of half ton 4x4's I'd like to get in to the 90-95 model range. The plow parts cataloges don't go back to my model year as the plow is a 74 -75 model and the mount was custom made to fit my 1977 farm truck. Thanks for your time.