Their 12" has a mounting depth of 7" and it will run good with .8 cf. These subs are fantastic they are hand made with your order and you have a couple of choices you can make on each version. JL amps are pretty good but I would go with Elemental Designs amps. If money isn't a real issue go with Sundown Audio amps. I have Focal Polyglass and I love them as far as SQ goes. Just my 2 cents. subs= Ficaraudio.com AMP= elementaldesigns.com or sundownaudio.com