I love it when things go bad on my Viper. I have an excuse to upgrade! I needed new tires last week but it doesn't make any sense to buy tires without wheels so I had to upgrade. I figured while the wheels were off I might as well save some labor costs and have them put on an adjustable sway bar (just to save some money of course). Damn, if im not going to need a brake job soon. Get a nav system but dont get a dodge product. Get something really trick and just to save some money add an amp and subs. Or, it sounds like you are a do it yourself kind of guy so why take the car apart twice to instal a radio and then subs and amps later. Better yet forget the radio, add headers high flow cats and a cat back so you dont care about the radio at all. Thats what I did
