Hello Jeffrey,
Honestly, it would be a quite a job. The Sansui arm is no slouch. It is finely crafted and very capable. That being said, you could probably remove it and install another. Myself, I use a Dual 1229 and installed a Grace 747 tonearm with amazing results. Remember this was designed when Sansui was at the top of their game, and judging from the specs and what I remember of the turntable, I don't think they spared any expsense. As far as direct drive tables go, it would be difficult if not impossible to improve on this table.