If any ones interested, I have an L-3 TRC497 Traffic Advisory system for sale $4200. This unit was tested in working order in a SR-22 Cirrus aircraft.  Includes Tray, antenna, processor, and install manual.
Here is some more info on this unit: http://www.sea-avionics.com/lc/cart.php?target=productDetails&model=Skywatch&substring=Skywatch+497
I also have this listed on Barnstormers.
 
Fly Safe,
Guy Foreman
321-626-7699 cell