Hifonics brutus 2400rms 1 0hm stable. i used it on the subs before. I actually just got off the phone with dc audio and im gonna go with a 3.5 cubic foot box with a port size of 14.25h x 4w x 27.6L tuned to 35hz and it should slap. port being on driver side. Now can anymore help me figure out all the numbers and everything for this box to get it to where it needs to be?