What is a cheap easy to install sub and amp for a 2008 F150 Supercrew? I do not have a pre wired truck. Not looking for blow your windows out power.

 

I may be selling my ID 10 v3 sub w/ the supercrewsounds.com box and P325.1 amp soon. It has the added depth and grey carpeting. This would be the cheapest way.
BTW I'm selling it to put a couple of 10's or 12's in mine. Probally around 1500 to 2000 watts rms.
I also may be selling a set of memphis 6x8's for the front doors and an Alpine head unit.