Trade for a set or one good Subwoofer!!!!!!!!!! I also have a monster box that fits perfect in a new Impala! It is made exactly for a new Impala! Its a 4-12 square L-7'S 2 ON EACH SIDE NICE PORT WORK!! Pics will be on here tomorrow!!dude Gave 370.00 to have this thing built for his Impala, Its extremely nice!! It was built at extreme Car Audio in Knoxville, Tn. by 1 of the best!! must see! I throwed it in the back of my van, took a few pics, but this thing kept saying ERROR PIC TO BIG!!!! I don't know how to resize pics! anyone's suggestions would be appreciated!! I would be willing to trade for a good sub, or pair of subs! Guy told me that it could be modified for round subs, without alot of problem!!