1971 Demon Bucket Seat Belt Set

Looking for a complete, front (including shoulder restraints) and rear, bucket seat belt set in black for my daughter's 1971 Demon. Converting it from an original green interior bench seat to a bucket seat black interior.

I understand that there may be two different styles for 71. Those with and without front retractors. I would be interested in either type.

Would like the set to be in good overall condition, where maybe a good cleaning is all that is needed. If front retractors are present they must work properly and sleeves on belts where required.

Thanks for your help!

Bill