what is the original fan size in a 68 Dart GTS with A/C? the car isnt factory (its got a 78 360 in it), and i dont have the fan. thanks!!

1949 International KB-2 "Mater" - 302/T5

1968 Dodge Dart GTS "The Drat" - 340/727

2006 Dodge Magnum R/T - Hemi

2016 Dodge Durango Limited - 3.6