There are very few faceplates left and the tool to make them is worn out, so I cant see them ever being sold. In the future, hopefully, they will be available from other sources. Cruzths is already selling some exotic wood ones, and is looking into having aluminum ones made.

Sled connectors - I think these are in farnell, can't remember the part number

Buttons, Volume knobs - I think Rob or Hugo mentioned in the past that they have tons of these around. I don't think these will wear out anyway.

Handles - Not sure about these. Would it be possible to get these made in small batches?