Probably a bit late reply but yes...kinda...I have a LATE production 67 cuda and the only spring was on the right hand side hinge. the other hinge did not have one. My 67 Dart GT was made on Dec 5th of 66 and it has a spring on the left and right hinge. The left one wore unevenly and basically oversized the rotating pin and it closed cockeyed. I have a suspicion thats why they went to one spring and then got rid of the 2 hinges altogether in 68+