If you don't have enough space for a 12 inch subwoofer then you can have a 10 inch subwoofer instead of a 12 inch subwoofer. 10 inch subs also can produce a great bass. It will fit in less space than a 12 inch subwoofer. Also it will not add much space on your car. So if you need a 10 inch subwoofer then you should visit us to see our best shallow mount 10 subs part.