i have a pair of 12" orion cobalt subs 400 rms 2 or 8 ohms and i was wondering if anybody can help me find out what size sub box i need for my oc subs (air space) i have had these subs for 6 years and i purchased them used so they are old and probably rare.the box i have them in now in my standard cab f150 is just a box i picked up at a flea market and i don't think it is the right size but i'm not sure can yall help me find the deminsions for a box for my subs i allready checked orion site and they don't go back that far and also what kind and size of amp to push them