I have a Samsung Hl50a650 which is a 50 inch dlp that I'm getting rid of, and I have the adapter you need. I believe that tru3d kit is just a mitsubishi adapter with the EID shut off. I am going to sell my adapter for $100 plus $10 for shipping if your interested. The manufacture date I believe is november 2010.
Let me know if you are interested. I also sent you a PM with additional info