I am missing some seat belts . 1970 bench seat car. trying to sort out whats what . I have all rears both Male and female model #3910. Both shoulders upper#3900. Frt outers #3950. I have only 1 pair of frt buckles #3900 &3950 so they match the males. I guess I need 1 more set of 3900 & 3950 buckles for the other side frt. My question is does a bench seat car have a belt pair for a center frt passenger? If so they must bolt with the 3900 & 3950 buckles going through the seat. Anyone know what model numbers they would be? All input is appreciated. gary

My question is does a bench seat car have a belt pair for a center frt passenger? If so they must bolt with the 3900 & 3950 buckles going through the seat. gary

Yes, they do. Can't help with the numbers, though.
BillL