It looks like this one:

CUSTOM GREY Rolling Code Homelink Garage Door Opener:eBay Motors (item 380123944016 end time May-17-09 20:43:25 PDT)

Sorry I can't help you out with Chrysler part numbers, but I'm pretty sure that's the same HomeLink universal remote that we have mounted on the headliner.

Might involve some cutting and wiring...