Heres what i have so far...Sony 900/1600watt amp, 2 guage rockford power wire and 2 1 farad rockford capacitors. Right now i have 2 alpine type r 12's that ive been extremely happy with and a custom box but im ready for a change. id like to have something comparable to the type Rs. any ideas? i also thought about going with just one Alpine Type X 12 so that i would have some trunk room, has anyone used the spare tire well as space to build the box in? can that brace be cut out of there without any problems? thanks!!!!! Brandon