I've got:
4 inch Alpine Type Rs in the front (biggest that would fit without cutting)
6 1/2 inch component Alpine Type Rs in the back (again, biggest that would fit) Had to cut out the stock amps for the back speakers and customize the boxes
JVC MP3 Compatible headunit

I just bought myself a:
Sony 600W amp
10 inch P2 sub

For all those second gens looking for a good system, damn it sounds good.
Total Cost: 850

To save money on this you could go with the Type S speakers and another sub, but I'd recommend my setup for any audiophiles out there. I feel like going out to my car to listen to music now.

 

none of the pics are working for me.

 

10 in sub

 

JVC headunit

 

I thought Alpine only made the 4" speakers in the type S model?

 

if it were me, i would toss the cheap 4" crappy speakers (no matter who makes them) and custom make some mounts for the front doors and install the 6.5" speakers in there.

you want the best sound coming from the front. after all, when was the last time you went to a concert and then turned around to face the rear...

those speaker locations are the worse ever. pointing down at your knees?!?