I'm not certain of the interchangeability, maybe someone else can confirm. I am partial to they styling on the one I have, some of those early ones have a more "rudimentary" appearance. Can you post a picture of what you have?
About to restore a Manitou 3 and the steerer is much longer than I need.
I'm fully capable of modifying, but I'm not in the habit of destroying unobtainium.
What I have: 1" threaded, about 7.5" overall (with 1.75" of thread).
What I could use: 1" threaded, about 6" overall.