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.