I stopped by Tustin, CA Infiniti today and the Satellite radio either XM or Sirius is ready to go for the G35. The problem is that only certain serial numbers are able to recieve the system as Infiniti, in their infinite wisdom, did not put the correct wirring harness in all the cars. Basically it will only be available on late 2003.5's and on. So even though you may have a SAT button on your radio you will not be able to use it. If you want satellite radio and you have an early model G35 it can only be aftermarket. What a bunch of Bull. I'm very disppointed after waiting for so long. By the way they quoted $550.00 installed for the system.