New to the Infiniti family. I just got a 08 G37 Coupe. I absolutely love it. Incredible automobile. It has the typical no radio/air conditioner is stuck on full blast. It's a 6 disc/No navigation Bose system. I am going to replace it with a stock unit from eBay for now. What do I need to watch out for and what is compatible across the lineup. Looking forward to being an active member. Thanks in advance for any help.