i got a good deal thats why i used the particle(free) but as u see in finished pic i didnt want to have to pull down the back seat to let ports show so i mounted everything at top..its got the shorter top because of an internal brace on roof..so mounting longer ports will not work at top cause its shallower..i tried to figure out cf but just went with what i had to work with and threw in some 6"ports,worked before but not this time...ive been thinking about rebuilding if i had too but money is tight..i only had too buy a peice of carpet for 10 bucks and wood was free and everything else i had at home