What is the worst thing that could happen using a ghost radio. Maybe I can find a inside guy to clone it.A G5 will work great too. I'm using my 536 and it works fine 95% of the time.
As for a Harris radio, that is opening up a can of worms. The newer radios won't allow you to do it safely. For the older ones you need to know which ones and those have to have a specific firmware in them then you need a specific CPS for them.
On top of it you need to know how to program it correctly to ghost the system or you'll end up in trouble. Stick with a scanner or G5. Unless you know what you're doing with a radio and programming you'll end up screwed.