The Polk speakers sound really good. I bought the car used and found that there were already some upgraded speakers in the door (infinity coaxails), but the small midrange on the dash was still stock. Some of the highs just didn't sound that clear, after upgrading to the Polks, no complaints. Its a lot clearer, especially when I talk on my bluetooth. I mainly listen to rap and rock. I have a 10" sub in the back for the bass.
Thanks Man, I should have done my journal just can't find time to build one.
I try to keep the car as simple and clean but lot of goodies to improve performance.
My latest addition is a whiteline sway bars.