What's up guys. So I'm making a box for my hdc312. Will run at 1 ohm on my AQ 2200. It'll be going in my 03 GMC Sierra. I'm making the box at 30"W, 15"H, and 14"D. I'm wanting to do aero ports on this one so not sure how to do that. I'm wanting it to be tuned 34-35 Hz. Can someone help me out...