Stop in for a cup of coffee
I think I replaced all of these when I put it together, but believe they were yellow/tan plastic like one I just took out. These replacements are supposedly Mopar brand from Rock auto. Black and seems harder ( go Karl). Summit has some listed for 76 up that are yellowish and cross to same Chrysler number. Haven’t found anyone that actually lists a ‘75. Not surprised, ran into that a lot when building it.