I have an unused RD-1C for sale.  It is in new, unused condition.  I am including the PSRU, the AT flywheel and the soft drive, as well as the aluminum standoff pieces that came with this.  I am asking $3,000 plus shipping to your location.  I bought it early in my planning to run a rotary.  I found a 20b with a Marcotte PSRU and can't use both.  It will be packed securely and shipped quickly. Contact me for photos or additional information.