Now there is a reason for the handbrake problem on this car and I'm surprised its not been mentioned on here, forby Me. Normal cars with handbrake cited between the two front seats have the cable routed below where it's connected up to a "T" piece. Two Equal lengths of cable then carry on to left and right rear drums on most cars take note.
Now in the Chrysler there is not equal lengths as one cable, left side, goes straight to left rear. Other cable has a elbow bend on it. Its this elbow that causes the problem. Pull on the handbrake if you please and you loose part of your brake pull because of this. Answer is to leave left cable slacker than right so drums get equal pull. (Might drive some people mad this answer).