My car is a 1972 model built in December 1971. The car does not have a seat belt warning system. I tried a 1972 belt that has the wiring harness for the seat belt indicator, which wIll not fit the body recess for the webbing spool. That makes me think I need a 1971 belt.
I'll take a broken belt. I think I've found a company that will refurbish it.
Jim.