Hi, I have a 03 Blk Coupe w/Bose & Navi. I've had systems before but never hooked up to my stock radio. Is this possible? especially without losing my steering wheel controls etc. I want to put the following in my baby.

2 L7 10 inch subs
Kicker 800.2 amp
kicker 200.4 amp ( Inside speakers)
Kicker Components
Optima Yellow top

 

I have an 04 sedan, i have 2 JL Audio amps, a 500/1 and a 300/4, JL 2-way components for the front doors and JL coaxials for the rear doors and a 12w6 sub. All of it is hooked up to the stock head unit, i have an old alpine eq, its the ere-g180. I think the sound quality is pretty damn good, ihave no doubt that if you put an aftermarket HU you would get pretty dood results aswell, but that would mean getting the DD kit and going through all that hassle, I dont plan on keeping the car forever, so im more than satisfied with my system. If i ever would get an aftemarket HU it would one of those eclipse DD screens, I think those things fit the overall look of the G35's interior just rigth. Anyways good luck with your system, im sure it will sound just fine.