Need help on build.

[Brandon1995]

I have a 2001 ranger extended cab and I'm going to put some dc audio in it. I need help on which ones to get. I plan on taking the whole back seat up for the subs.

1- level 6 18 & 5.0k amp

Or

2- XL 15's & 5.0k amp

Which set up would be able to push more air the single sub or the double sub. I want to make sitting inside the truck hard to breathe when the subs are playing.