This airframe, W.Nr. 240102, is currently in storage at the Garber Facility in Silver Hill, Maryland awaiting reassembly and display at the forthcoming Dulles Extension of the National Air and Space Museum.  I was able to get these photos through the kindness of Will Lee, a restorer with the NASM.  I have also included a link to what must be the most extensive set of cockpit photos available online...via www.squadron13.com.  The link is below the two pictures I've provided, and you won't be disappointed! 

Instrument panel                Overall cockpit shot

For a detailed list of the Werknummern and Stammkennzeichen of each and every Do335 produced, have a look at:

http://aeroflt.users.netlink.co.uk/profile/d335prod.htm

This site, although in German, offers further detail pictures of the 335, and is hosted by the company which was originally contracted to restore the aircraft.

http://www.der-werftverein.de/akr/flugzeuge/do335.htm