Sp4 12's in a 4th?

[d-nice88]

Ok ive never done a 4th order and im still researching on how to build them but would it be possible ? I would have the port shooting threw the rear deck lid like a malibu ive seen on this forum. Ill be putting it in my buick lesabre 97. Been sitting for a while since i removed my fi bl 15's and puttem in the truck. Time to get her rolling again with some birch wood this time so the weight dont kill my tranny :/