find a friend with a little 10 doesn't matter what power just put it in a sealed enclosure in center of vehicle find loudest freq w/meter this will tell you aprox reson freq for truck easiest way to vehicle specific tune (if you have a meter lol)(and a 10, and a small amp,and a sealed senclosure) but all that and viloa' //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif:crazy://content.invisioncic.com/y282845/emoticons/veryhappy.gif.fec4fed33b4a1279cf10bdd45a039dae.gif