They are not designed the same, but I think they are interchangeable. However, I can't guarantee it, because I never actually tried one (yet). The steering box end should be the same at least. You should make sure they are really the same length (or close), and if possible, make sure that the column end at the top is the same diameter. I'm pretty sure it is, because I know that they did not change the design immediately when they went from Saginaw to Chrysler column in 95. I have an 89 shaft in my 95. If they're the same, a newer one has the advantage that you can telescope it without breaking anything, and that means you can install it without loosening the steering gear or the column.