Amp for the radio?

[TheGreatJuice]

I want to buy an amp for the radio to keep up with the mad amounts of bass I'm going to be running in my vehicle. Im going to have 2 12" DC XL's at 3500w RMS. Ive seen so many different amplifiers with power enough for car speakers but would 50w added to each speaker really enough to keep up with the bass? Im new to installing car systems and I want to be sure I'm running enough. I was looking at the DC 175.4 amplifier but I'm still unsure if I can run 2 sets of components and 2 6x9 speakers on a 4 channel or not. Any help would be grately appreciated.