I have already added 1 phoenix gold tantrum X 10". I want to replace my HU with something classy looking( no red, blue and green flashing lights) and i want to replace my front speakers with some nice components. I have ben looking at focal and boston acoustic but all i can find are 6.5" and 5.5". Will these fit? also what are people doing to fill the space where the in-dash 6-disc was? thanks in advance for your help.