Bucket seat track/rails

On my 74 Duster the track/rail for the bucket seat is loose and/or broken. It appears that the guides within the rails are missing or broken. Also the spring inside is missing. Is there repair parts available or a replacement track. It is the adjuster lever side. Will the track from bench seats fit the bucket? I checked the sites at YearOne and RT Specialties but nothing there. I appreciate any help.