Aftermarket "universal". Not bolt on!
Amazon 2 d 1965-1970
Amazon 4d 1965-1968
Automatic seat belt for the back seat in very old cars
must be properly fixated.
Enclosed screws fit for standard belt threads. In old vehicles, another thread can be used
In particular, by alternative installation on the front seat, belt straps should be installed so they can be easily disengaged.
Please see the info text at item no. 1006805!