This kit is Kicker's "Substage" Kit which only includes the powered subwoofer that installs in location of the optional Sony sub. The K-PF150C part number is Kicker's "Powerstage" Kit which comes with the same 10" subwoofer as the Substage kit, but also includes another 200-watt amp that boosts the power on your truck's factory door speakers, along with all the wiring to get it hooked up to the speakers and head unit.