okay im gonna help you out go to diamond audio.com and looked at there door/ tweeter speaker set ups for ur fronts the mids that come with them hit nice and love lows no you dont need a sub to hit the lows. yes its deff a preference by me but if you build some door pods and throw some diamond audios in there i guarantee u will get some more bass no you wont break the windshield lol.. Another brand would be TC sounds..

 

i bought 6x9 boxes from wal maart and cut the wires from the back and pluged them in 6x9 all round for me with a 10 inch

 

I know these are expensive but in a regular cab and you want a system they are a LIFESAVER. Plus they sound AMAZING

http://www.google.com/products/catal...ed=0CFgQ8wIwAw

Ive got Pioneer 6x9 4ways in the front and pioneer 4way 6 1/2 in the back with the stealth box. I remember the speakers in the doors were easy to get in had a trim a tiny bit and they did seem a bit shallow but you will be fine, Buy them somewhere close just incase you gotta make a swap.

 

I have 2sets of infinity components 6 1/2. yes they can handle 90 watts rms, but are far away of a real, clear and loud bass, when you are looking for bass is, to hear the sound, or to feel it! if for your ears, speakers are ok, if for your soul get a sub