Get some tweeters where the winder blanks are...
I'm running 4x 6 1/2 inch components, there amp'd up by a Alpine V12

big paving slab!
In the boot I've got 2x 12 inch Vibes powered by a Mtx amp
I keep saying I want to go down to 1 sub as it's never run at it's full potential ( thank god ) but I bought the subs/ amps new in 2001 and they've just gone from car to car.

Definitely got my monies worth from them