I know they are geared to modern aviation, but still...
Switch panel
http://www.saitek.com/uk/prod/switch.html
Instrument display (Of course any small display configured as the instrument panel display may be better!)
http://www.saitek.com/uk/prod/fip.html
Well, since I mentioned:
7" wide screen LCD, just big enough to display key part of instrument panel, I think uses USB connection (just adequate enough):
http://www.nextag.com/DoubleSight-Di...41/prices-html