Early A magnum to core support clearance

I run 26" stock replacement 2 row rad for my 75 Swinger with a electric fan that I ordered for 99 5.9 Dakota( now sold) .
Have a March under drive pully on the water pump, and run a 3:91. At 75mph @ 95 degree outside temp it stays between 180-195 with the AC on.
Be sure the shroud fits the fan tight.