mr.magoo

It has been a long time since my Punch 150 days. Trying to get in da bass game again by working with my boy on his single cab 3500 dodge dually. We made a box with the help of the Rockford box wizard . Were running a m5 mojo with a pr1000, Alpine head unit, a Rockford p-400 with 6x9 polk audio's up front. Sounds nice and clean but I'm gonna get rid of the mojo and try 2 Sundown sa10's to see if I can get more bass. QUESTION??? Can anybody help me with the port size and airspace ne...