OK so I know there are several threads on here regarding putting a RHR into a truck that didn't come with it but my question is besides requiring a high speed one, is there a difference between RHR radios in different vehicle models ? Some say they are for Grand Cherokee's and Durango's some say liberty, wrangler, minivans, nitro, ram. There are several different part numbers but will they all work?? even if they are only listed for other models