Well my bud told me my sub would be alot louder firing backwards in my ext cab, so I flipped the box around.//content.invisioncic.com/y282845/emoticons/eek.gif.771b7a90cf45cabdc554ff1121c21c4a.gif BIG differance. Its a type r 12 in a ported box pushed w/ 1200rms. Its seriously uncomfortable to sit in the truck with the windows down now. Nobody can believe its only 1 sub back there. way louder than foward firing. If anyone has subs facing foward in the ext. cab you should see what the sound like rearfiring. Mine is as close to the front seats as possible. oh, and im getting some big back window flex!//content.invisioncic.com/y282845/emoticons/naughty.gif.94359f346c0f1259df8038d60b41863e.gif