well im deffinately going aftermarket on that sub...i already have a punch p3 in the back so im going to get the rca signal from the amps rca output made for a second amp...then just run the power and ground from the amp as well...this is going to save me alot of wiring time...i figured i may as well use both amps since i got em...i also want to figure out what they put out because if they put out more than my head unit ill get 2 more and use them for the front and back jbl's...btw i got the jbl's from the two limited explorers as well so now i got the jbl two ways in the fromt and back...they sound great...especially for stock speakers...this is gonna be the greatest stock setup ever...on the cheap...anyway if you happen to figure out the wattage on these id love to know