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I don't have one for sale but I THINK the tilt and non-tilt shift tubes are the same thing.....at least for the year range you're looking for. That might make it a lot easier (and cheaper) to locate a donor. Plenty of "junk" non-tilt columns floating around out there and column shift or floor shift shouldn't make any difference either.
I'm not 100% sure on this but it's worth investigating. If I had a tilt column here that was blown apart I could make the comparison for you. I've rebuilt/restored both and my recollection is they are likely the same piece......sure, they "install" differently (slip fit vs. "press" fit) but I have a feeling the part itself is the same thing.
Pic below is what I'm calling the "shift tube".....