This is how i did it in my CrewCab, a subbox behind the seat and the amp underneat the bench in the middle. It will be quiet the job to make a box for underneath the bench, but it's doable i guess. Whatever you feel like is best. I got 2 flat kicker subs coming next week, already got the box made up and amp in place. Might not be under $300, but that is a real tight budget.
