Seat belt suggestions

What make and model of vehicle that can readily be found in most Pick N Pull yards are good donors for three point retractable seatbelts with little modifications? Thinking I'll have a few days to go do some yard hopping over the Holidays and Seat belts are on my list of items to look out for. If there's some of you that have already gone through the pain of testing and fitting later model belts to your car and it could save me some time, please share what you used.

they're for a 72 Duster, with aftermarket buckets. No rear seat.

Thanks in advance for your time.

Jerry