yes. the stock system is designed as a basic add on to the system. changing one part of it is like putting on a clean sock and expecting to be a better runner. if you really want a sound improvement you will need more than just the sub. also the factory sub is pretty low power and an equal replacement is not something that will perform to an expectation that would be desired.
2013 F150 4x4 SCrew XLT 5.0L
Midwest Crew #22
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