external amp.. dei 4500...... (deck power blows)..... some new compenents. i'd prefer focal.... but pricey.. so go with infinity kappa.... upgrade the speaker wires.. i know it won't help much... but it will some. power wires to 4 gauge. all grounds to 4 gauge. this will help in the future. trust me i know. i like EQ's... helps tune the sound so much.

after all of this... i guarentee great sound.