I have an '03 Dakota Quad Cab (No Infinity System) and I'm looking at some speakers, so far this is what I have decided on.
Front : Infinity Kappa 50.7cs 5-1/4'' component speaker system at Crutchfield.com (http://www.crutchfield.com/S-0SEhiIjRjxT/cgi-bin/prodview.asp?I=108507CS&g=410&cc=01&sl=C)
Idk what I want for the Rear, Btw I can fit 5 - 1/4 and 6 -1/2 size speakers, I'm looking for Component ones as well.
Also I'm not ordering from Crutchfield, they are too expensive for my tastes, I know the other sites I can go to in order to get a cheaper price.

Honey you showed me the speakers last night.......I am stereo retarded. I looked at them and went...huh? I listen to Winamp.....nuff said. Good luck though *hugs*

Depending on what you want to spend, these are way better!
Focal Access 165A 6.5" Component Speaker (http://erclk.about.com/?zi=5/dU9)