I have a 542ASC with 28"steel tracks that I want to replace with the rubber belt tracks, all four, but I can't find the manufacturer that makes them. Will probly call Tucker to see if they have a full set if I can't get a set otherwise.
If you actually decide to go that route, I am replacing the tracks on my 6 wheel carriers with the newer series belted tracks. Was going to hang onto the old tracks and sprockets until I ran the new ones a year to make sure I was happy with them, but might part with them early. They are just the tracks and sprockets, no carriers.