Ok n about a month I'm gonna get a 4 door Z71.. I was wanting to know what was the best way to go as far as having as much bass as possible.. I was thinking about replacing the rear seat with 2 bucket seats and biuld the middle into a big sub box and put 2 15's.. Then I decided I would put just a 15" re xxx on the back seat and when I got tired of that put 4 8" sundowns behind the back seat.. So just give me an opinion on what to do thanks