Only reason I've seen is due to ford being a driver side drop, versus pass side with the dodge. Clears alot of room for larger downpipe and you don't have to battle with front driveshaft, tcase, etc.
'93 W350 5spd Getrag, 4.10 gears, 83k miles and counting, Mods: LPPP AKA Ma Dually '54 Dodge M37 6.2/700R4/205, 5.89 gears, WC rear axle
Ford dana 60 fronts are driver side drop. The reason people like them is that they have a high pinion center which improves drive shaft ground clearance and lowers the front angle. They also use a reverse cut gear set which is a bit stronger then the low pinion axles.
New to dodges, i knew the fords were hi pinion reverse cut. I figured the dodge was the same because it was the same era, after looking around seems like they were kinda exclusive to ford.