@ poster
headunit
get alpine or pioneer hu. and try getting the higher end models.
features to see are
a) atleast 4volt
b) 3 pre out (front ,rear,sub)
c) highet para eq band available (for reference 8850 has 16 band)
rear speakers
you do u want to spend so much money on the rear when u r simply going to fade them for imaging!!. i have not put rear speakers since 3 setups and i dont think its all tht imp... if u want to put , then get somthing low end,
Amp
again if u have rear, then get 4 channel. otherwise 2 channel for fronts. i suggest get atleast 90rmsx2
Components
well my answer will alwaz be kenwood 1702p they are some excellent components. sounds really high end
Sub
well...... there are so many i dont really know wat to recommend.... x11d , then i suggest 2 type r d2.