I have a very nice driver C with the original motor on the shelf and a rebuilt S90 in it now. I have $90k on mine which might be a tad low. An original SC, even if needing some love, should be at least $80k if not more. Mine actually left the factory as an SC per the kardex but the motor, trans and SC badge were swapped at Brumos before the first customer took delivery.
If you haven't, check out the 356registry and maybe post there as well.
