hello, my car is 2800cs from 1972, but there is no place in the head liner or on the side, but there is place on the floor next to the seat to attach the base, I don't know how this 3 way belt should be installed, will you please explain if you know howFor Sale: A set of original BMW retractable Autoflug front seat belts for the E9, Left and Right , used but serviceable, 450 €+ Shipping
... and these cars has special cutouts with plastic slots where the belt is coming throughBMW offered from 1973 on, the retractable belts as a retrofit for all E9 and issued the information over the dealers network on how to do it. Those belts do not attach to the roof but to the rear inner wheel well behind the armrest.