Russell,
If you can inspect the shock plates and get measurements for the plates (u-bolt spread, force bar drop from plate face), cantilevers (c to c of bolt holes and spring mount hole + angle) and bars, I can possibly tell you if they will work. The force bar length is easy to adjust, cut the end out, shorten and re-weld.
I had a set of tracks that I measured from a friend. Let me know if I can help out.
Biggest question... how much?