Which fan shroud to use 72 Duster

Getting ready to install a fresh 408 in 72 Duster...I plan to purchase the Cold Case 755 22" radiator....The tech person at Cold Case said that either of these shroud part numbers will work with their product...2785614 / 2998325 Is anyone else running this combo that could recommend one shroud over the other?..The car is a manual trans and No A/C if that matters...Thanks in advance Eric