This is the first box I will have designed and built, have been out of audio for awhile. Building a box for 2 DC level 4 18s, per the specs ive come up with the port needs to be 24in long/deep whatever, it is 22 tall 7 wide 24 long. the box itself is 24 deep so i obviously need to L the port, so i would go 17 inches deep and then L the port. it is a middle port so the question is do I go 17 deep and then L 7 inches on both side or would I do 3.5 inches both sides for a total of 24? Maybe i am over thinking this lmao but any advice would be appreciated. shitty picture of what im talking about below