I just bought a 2003 Grand Prix and I am seriously thinking about putting an after market stereo system in. I already have a lot of experience with installing things in GM vehicles, but I still wonder how much of a pain it is to take the car apart. Can anyone give me some helpful hints that may make me feel better about taking apart my dash and my rear seat? Also crutchfield sells two adapters, one which connects the onstar interface with an aftermarket radio, and the other connects the steering wheel controls with an after market radio. Has anyone else tried using these adapters with an after market head unit, and if so what were the results? Thanx in advance for any expert advice

Jon (Long time GP fan, first time owner)