Dodge Demon Gage Cluster question 1971 vs 1972

Seats are 1972, without the médaillons in the front. Rear bumper has jack slots. so it's a 1972.

What's the difference between 71/72 buckets? Looks like medallions were lost when seat was re-opolstered. Also does the 71 not have the slots in the rear bumper for jack? Great observation.