Hi
I would recommend one of the Pioneer CD players which have the "Stable Platter" transport.
These are excellent transports and I understand they are used by the likes of Wadia. The CDP's can often be picked up quite cheaply on Ebay, just make sure they have digital and optical outs.
I intend to do just this myself. I would then do a few basic mods to the power supply, add a bit of dampeing to the chassis, install an IEC socket and away you go.
Bluesky