HDC3-15 sub enclosure

[Morales3592]

I have a hifonics hfi3000d and a hdc3 15 sub I am wanting to install in my charger. I am wanting to port through the rear dash and maybe seal the back and maybe create a bandpass box? I need opinions. If not able to I'm still porting through back dash. I want to know how much air space is needed and port area and a simple explanation on port area and how to design a port with that. I listen to ALL kinds of music and like the real lows. I heard you could tune these subs around 38 and still have it play lows well. Hope to get a few opinions thx