Thanks Izero. Heres the bottom line on why I haven't considered subwoofers. I used to have subwoofers in my car in high school and early twenties but now I'm in my thirties and I have a family so I'm not trying to relive my glory days just want a little extra kick. Also family life has made me more practical, the storage space under my back seats are better used for jumper cables, a tow rope, tools etc...(I know I should have this stuff in a tool box on the back but I just got this truck and to not sure I even really want one). Anyway thanks for the help I see some infinity six by nines on amazon that can handle 28Hz, I think I might try them.