lol . . sawzall its really not that bad the top is a little rought but its because it was doube wall with thick gauge seat reinforcements so it was a little difficult, in retro i should have just cut 12" high , avoided the doubled area and configured the port thru there and left two thirds of the woofer visible, yes the owner saw the cut and wasnt in as much shock as some on here . the single fifteen alpha is more than enough believe me he now needs at least three layers of dampner on the roof . . and he wants two fifteens now , this is the third system i put in this truck in less that two weeks , begining with two 10's under the seat . . .