Hey, I'm looking for a new setup for SPL this season and I'm looking for help designing a new box. I have a 15" dual 2 ohm double stiff spidered Inhuman sub...the specs are:
Fs: 41.8228
Qts: .5717
Vas: 1.544
Qes: .6144
Qms: 8.22
SPL: 89.00
BL: 20.88
Re: 3.23
Le: 5.2185
Mm: 315

I have a 2 dr sunbird and was thinking about a wall type design behind the rear seat. Thats my current setup, but i was thinking about the driver on the passenger side and the port on the driver side (currently, they are swapped). Anyways, is tthis my best choice and what size should the box be and port size? If there is a better design, please suggest it, im looking to finally break the 150 db barrier (current max is 147.2) and i think its going to come down to proper box design.

any suggestions welcome..
thanks, ben