hi i have a 2007dodge charger with a clarion dxz 855mp head unit with sony 6x9's in the front and rear running off a mtx 4 chanel 420watt amp and 2 kicker 10" comps running off a mtx 300w momo amp but i am looking to replace the speakers with polk 6.5 components in the fronts and polk 6x9's in...