you agian, lol, helpin me out all over, i ordered the inmotion by the way, and pulled my ecu out wasn't bad at all, but anyway so i have a ten that fits up to my back seats but my car is a roadster unlike yours and i guess there is a metal plate behind my seats and that i won't hear the sub i dunno, im thinking about just replacing the speakers in it with sick alpine speakers or something, but with the line converter i would just tap into my speaker wire somewhere and it goes into and out of a box then i run rca's off it into my amp? i might try it and see how it sounds and get the speakers inside, your car is a hatch right?, i bet it slams in there