Ok, now heres a challenge, well definently to me, but any way I got an s-10 reg. cab 2000 pickup and I want to put this sub in it: http://respl.com/12.html it says to put it in a ported box that's designed for SPL and is 3.5 cuft, with a 43 Hz tuning and I don't even no where to start:banghead...