Good question! I do know if you simply switch the seat brackets to each side, it moved the seat forward two inches. That's ok and gives a little more room. I seen also somewhere the box was the actual seat mount and looked stock(sorta) but I can't find info on that speaker boxDo all these have to use shallow mount subs? If so who's subs are yall using? I want to get some real bass in the truck but can't lose any space in the cab with 2 little ones