Hi Billy, if u want a custom box made i can make you one no problems...
about the size of the box...about 1.25cuft per sub sealed would be perfect for the subs..
depending on how you like your music and what music you listen to, will determine what sort of box you should go for...
i myself have a pair of Pioneer 12's in one of my own boxes which is about 5.65cuft after port displacement and speaker displacement etc etc and FOOK me does it drop! the box is HUGE simply becuase i like the LOW frequencies...certainly has made a number of ladies smile LOL
if you listen to fast bass, like dance etc, then stick with sealed, if you like rap, hip hop etc then ported...
you might even find 1 12 in a ported box is more than loud enough for your needs

if you wanna chat in more detail, add me on messenger on
bassboy_loud@hotmail.com
bassboy