[oldandtired]

Try sending a personal message to v8fordman here on Fordbarn. He has both 37 and 39 pickups. I do not personally think that a 39 radiator will work on a 37 pickup because the radiator filler on the 37 pickup comes out through the top of the grill and the 39 is under the hood. That may explain the height difference. Good luck with your project.