Find or make/ repair seat cables??

[6771911esses]

I have 2 broken seat cables in my '77 style Sport Seats. Does anyone know who can make new cables or repair these properly?

I will buy new/ used ones if avail. but they seem to be NLA.

PN 911-521-615-00 and 911-521-616-00

See pictures:

Any leads appreciated! Look around your pile of junk seats please!

Thanks,

Mike