I just got home from getting my Omega Alarm put in. When I dropped it off this morning, they told me that it would take 2 hours to complete. Well, 8 hours later they were finally done. They haven't done a Challenger yet and they said was extremely complicated. I ended up getting the paging and alarm system. They said that there will be a GPS add on coming out that I could add real easily. I'll let you know if I have any problems with it. So far, so good. A little piece of mind goes a long way.