1970 Duster Radiator mount dimensions

Drivers side, center of top hole to center of bottom hole, is 14 5/8 inches. Passenger side is 14" even. Radiator opening is 22 3/4 inches wide if you want to compare it to yours. My car is a 70 Duster, and was a /6, 3 on the tree car. Key word...WAS! LOL. It will probably end up a 340 4 spd with a 26" aluminum radiator. Hope this helps.