Different carbs on dual tunnel ram

The reason hemi and 6bbl carbs only have choke on one carb is that one carb is the only one that has the throttle plates opening with you foot coming off idle speed to drive the car. The other carbs open later.

if you are going to have a progressive linkage you can have choke on one. If you have both operating at all times then choke may be needed on both if you are concerned about cold weather driving.