i want to get sirius sat radio for 03 g35 whats the best way to add it

 

wow thats a toughie now that you already have the car. the fm modulator works but sucks for quality. The best way is getting a dealer installed version which is very pricey. If you arent partial to the head unit, get an aftermarket that supports it and you will not only end up with satellite radio, but better sound. I am not sure if your unit has an auxilary option, but that would be the most sensible thing.