Overheating issues on a rebuilt 360

@Ccas so I’ve called cold case and they told me that I only need 3 3/4 inches of space between the radiator and the water pump pulley in order to fit there 16 inch fan shroud but the fan shroud dimensions is 30x6x26 and if I’m reading that correctly that means the width is 6 inches and that it won’t fit Im not doubting what the guy on the phone said was true I just wanna he sure before I make the order
Radiator part# Mop752