I have absolutely NO clue how to build a box for this car, I can build a big fart box for a trunk anyday of the week though

I have been told to try out a panda style box for this car and I honestly have NO clue what they r like(now ppl will flame me for my lack of searching) I would sooner get straight to the point in a thread here, rather then spending hours serching about something i have no clue about. I currently have a standard cube style box in it right now, with a 6" aero firing at my drivers tail light, and the numbers are less then decent.

Its a singe 12" TFone dual 1 ohm.
build for Street A Bassworx 3k amp.

any help would be greatly appreciated