I'm looking at doing a 4th order in my truck , I have 2 t3 custom built 18's and would like to see if anyone else has made a decent 4th order . I have 54-60" wide 48-52" height and about 24" dept these are guesses as of right now going of old box. I was thinking 10 sealed and 20 ported . Not sure if the room is there. Also not sure where I'm going to put the port yet . But just looking for ideas in this tight area since its tall and skinny. Truck is 99 f150 extended cab