What is best box alignment for B&C 10FW64 10

I am also confused and not sure what I am going to do.
the nextel drivers are for the thors IF I can make them work but I was thinking about making smaller cabinets. That is why I am trying to learn about cabinets. you helped me quite a bit by the needed clearance with your guidelines means I really cant go narrower than the thors at 9" but I am getting the itch to build new speakers and the nextels are not a drop in for the mags. close but not quite. thanks again for your help