Found Rear Seat Belt Bracket 1970 Chrysler 300 Convertible

[Samplingman]

@Samplingman Are these the plastic sleeves you're referring to?
I've got 1 of the longer sleeves and 2 smaller sleeves.
View attachment 691502

The longer one is what bolts to the bracket for the rear lap belt, the shorter one is for the front seats. Thanks, but I’m good with the sleeves, it’s the brackets I’m looking for.

 

[Samplingman]

Thanks everyone for your help, the brackets have been found thanks to @Dutchrebuild!