I am looking to install either two square 15 inch Solo-Baric L5 subs, or either four square 12 inch power acoustic subs in the rear deck of a 91 Chevy Caprice. This is the bubble style Caprice Classic. I'm a professional when it comes to cutting any kind of body work and i plan on making the right cuts to pull this off. My question is, should i use the trunk for my box, and seal the trunk? Or should i build a box inside the trunk? And also will i break my rear glass? If i decide to go with the Solo-Baric 15's, i will put a single solo Baric 15 inside the trunk in a single solo-baric chamber also. If i go with the 4 power acoustic twelves, then i plan on going with two more inside the trunk in a dual solo-baric chamber. I need some advice. What are the pro's and cons? What kind of trouble can i run into but regardless i want this done, and whats the best way to pull this thing off?