NVX QBUS10P 500W Peak (200W RMS) Amplified and Loaded 10" Ported Under Seat Quick Bass Universal Subwoofer System with Remote Bass Knob

I did the four Kicker speakers you posted, this NVX QBUS10P Sub under my driver seat and these DS18 tweeters about two weeks ago and I'm ecstatic. I'm not an audiophile, just wanted a fuller sound with a little clean bass and cleaner overall experience. 100% satisfied with the result. If I were to do it again I would skip the rear speakers. Glad I did them since everything is now "upgraded" but there's really no power going to the rear speakers from the OEM headunit. Maybe I heard a 3% gain in clarity in the rear but, diminishing returns with the rears and OEM headunit and it's probably a placebo effect. I never plan on adding an amp for the speakers as I want to keep my OEM headunit and OEM microphone. All in all like I said I'm very happy and not wanting any more improvement. I probably would have been almost as happy with the front speakers and tweeters by themselves but the sub really rounds out the package.