I have an 08 quad cab with 2 12" JL Audio Subs pushed by a 400 watt Kicker amp and hooked to a Kenwood KIV-BT900 Digital Media receiver. Problem I had was finding subs shallow enough to fit in the sub box. I usually go with Kicker Solobaric subs in all of my vehicles but the drop in sub box wasn't deep enough for the magnets.
Trying to find good shallow mount subs in the big box stores yielded nothing so I went to a custom shop and the guy told me the JL Audios (which aren't shallow mount BTW) would fit. They sound phenomenal too.
One on each side balances the bass well instead of 1 solo woofer.