in my old chevy truck i had a box made (wasn't expensive about $125) made to fit under the back seat for 2-10s. at first i put mtx subs but later put in some boston acoustics and what a difference.

i also hada single 12" image dynamics IDMAX sub in my cadillac and it blew everything i have ever heard before.

in the ram i do plan to have a box made for 2 12" image dynamics subs(not the IDMAX because the depth is to large).