Car stereo advice please!?

i want to upgrade my sound system. i have picked out the speakers i just don't know what amps and how to do them. i am going one of 2 ways. 2~ 5.25 front door speakers (Kenwood 28 watt rms/140 peak watt) with a pair of Kicker 6x9's in rear deck lid (70 watt rms/140 peak) and a single subwoofer (10" or 12" or Bazooka nos bottle6" - 8")

or the same setup with additional 6.5" mids in the rear doors and a pair of subs vs a single sub. i know i need as much power to the subs as the rest of my system. i know i can go mono on a single sub. or stereo for a pair. i really like the Bazooka NOS-6 or NOS-8 the lookalike nos bottle with a single sub would be fine for the music i listen too (hard rock and metal) plus i am making a show car %26 Sunday drag stripper(Aurora V8) not really a boom box. i need advice on amps. i am going with 4 ohm door speakers %26 6x9's for sure. i presume the subs will have to match. i'm confused with all the options, bridged, multiple channels, tri-way crossovers etc.

Car stereo advice please!?vincent

Well first of all i wouldn't buy any kenwood at all...

you can get way better quality out of same priced speakers..

(pioneer.. alpine..polk..focal). get splits for a much clearer sound at the front.

You should buy a Mono amplifier for your sub (1 x 400RMS 12inch sub will be plenty of bass specially for rock/metal)