Dual Quad Carb question

They had the same pri & sec jets, but different met rods. And they are three step rods, not two step.
4326 #541 rod 0.0605/0.058/0.053
4327 #164 rod 0.0625/0.060/0.053"


So the man trans carb has slightly richer cruise steps. Agree, would use the 4326 as the primary carb.