hotshoe36,
When you added GMC (not A-D, ND New Design, 47-55) to the question, that factor limited responses more than the change of forum.
What year/size GMC Radiator are you referring to? What is the thickness of the GMC radiator? If the GMC radiator is thicker than the small-truck Chevrolet radiator, you might have fan-clearance problems.
