Hi everyone, I'm new to this forum. I have just bought a 2003 Nissan 350z, its just a base I believe. It has the Bose System with the 2 subs. I just want to say in advance I don't know much about cars at all. I wanted to upgrade the audio system though. I was hoping someone could tell me some good upgrades, I want to change the headunit with a touchscreen one, and change out the speakers and subs but I don't know which are good and what I'll need for them, so i was wondering if anyone could help me out.

 

Remove all Bose stuff.

-Dash kit to install the head unit
-Wiring harness adaptor (so you dont hack up the stock harness)
-Head unit (I have had countless Pioneer hus, have had Kenwood and Alpine also but I always end up back with Pioneer)
-Amplifiers (one for sub, one for speakers), or you could just use the headunit's internal amp for the speakers
-Replacement components for the front
-Replacement 2-way coaxials for the rear speakers
-Subwoofer enclosure + subwoofer
-Power, RCA cables for install, some misc power distribution hardware

You are going to just have to do research on brands, go to Crutchfield they have a lot of primer info which is sounds like you need to read.