It’s always a good idea to try to make our old Mopars a little safer. There are lots of options for just about any era or style of car. Allpar ran a good article on adding shoulder belts to the back seats of a 1984 Dodge Daytona Turbo Z. I’ve had good luck with this kit from Julianos on a B-body hardtop. Or you can go whole hog and add seats with integrated belts like this guy at forabodiesonly, who used front seats from a Cadillac CTS in his Dodge Dart.