I've own Mopars starting with several 1957 Chrysler and a 1959 Dodge and multiple 1962 to 1971 A,B and E body cars.
I've never seen or heard of that retainer, I like it up
What brand, part number and where I can I buy them help work


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)