Hi Mike,
here's one website that does the reprogramming: 2004-2008 Chrysler Crossfire ME2.8 Immobilizer (SKREEM) Delete Service — Precision ECU. Looks a little pricey, but there may be others that are cheaper. You can also get a used SKREEM, and send it to reprogrammer with your ECU (maybe MSS does this, not sure): 2005 Chrysler Crossfire PCM | ECM | ECU | 3.2L | VIN Programmed & Updated
-Jerry