lmao whered you get that number from? not even close
3 15s = 530.14"
3 18s = 763.41"
Hey wats up buddy, yea that's wat I'm thinking four z3 15"s should crush hard as he'll in a my jeep especially with that power.
i would do the 15s, even though sundown says down to 4 cubes for their 18s its still sorta on the small side, 3 z15s will destroy the lows in that box