need some help with a box design

[James Boss Hawg Pickett]

2 12,s planet audio big bangs 600 rms and 1200 max ...small t0 mid sized suv wanting some more boom. then my undersized box help me out guys running of a memphis 1000 class d.....subs back dont care where the ports are facing working space 36 inches wide and tall and depth what ever looking to make a street beater as loud as i can get get it thanks guys

[Joe X]

List the total depth you have available as you likely don't want the subs right against the hatch, also what vehicle is it? Usually you go subs up / port back for best output although you can also go subs back.