Well, im about to pick up an 08 sedan. Ive had three cars, and all three have had a aftermarket system in it. Stock just doesnt do it for me haha. I'm going to be getting pics of all the progress as i go though. I'm going to be using the stock bose headunit. Using a Rockford 3sixty.2 processor, CDT Gold components up front, Focal poly kevlar components in the back, Alpine PDX 150.4 for those. As far as bass, i have an old school Cadence A7HC that has treated me well the past 6 years, so no need to replace it. Either looking at getting an IDmax 12, or a DD 3512, and put either into a ported box, being ported into the cabin. Oh, as well as 150 sq ft of Raammat, and enough Ensolite to do the whole car. I have all this just sitting in my room and dont even have the car yet. SHould be fun taking apart a brand new car haha.

 

good luck! i have yet to listen to a modified g35 bose system that sound great. Im sure you can make it sound from decent to good. Hopefully you get it to "great". Let us know how it goes since you seem to been through a few systems before so i expect your expectations to be relatively high as well.