This kit from Alpine will get your truck souding GREAT! 6 speakers, two 8" subwoofers, an 8 channel DSP amplifier, enclosure, and all install wiring & parts we need, are all included.
The dual 8" ported enclosure fits nicely under the rear bench seat, and has a nice Alpine badge, and even a place to mount our amplifier. The OPTIM8 is the heart of the system. Plenty of power, and DSP technology allows this sytem to be tuned to sound.... well... OPTIMum :-)
Alpine has versions of this system (same price) for both B&O equipped F150s, as well as ones with the base audio package.