Try lathemaster.
Grizzly also offers them.
Also there is another importer.
Have you checked the Seig C6 Yahoo group?

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Rex Burkheimer
WM Automotive
Fort Worth TX

himog wrote:
Who sells the larger size Sieg lathes? These are in slightly different
sizes than the more common lathes sold by HF, Enco, and Grizzly. Also
they have rotary detent style levers for the quick-change gears instead
of the row-of-pins-and-holes style levers.