basically i gotta get creative as to where to put things,behind my seat (91 silverado single cab)has my subs and amp and i have 4 stock 4x6's and doubt i can go bigger there.the bass is tolerable but i cant live with the treble not bein louder.i have another pair of 4x6's i may hook in but im sure that won't be enough so i want components that will help me out.willing to spend whatever it may cost to sound good, just gotta figure where im gonna put em but need product suggestions. how big are their amps as i want to leave uner my seat open incase i need more subs.