Ok so here is the situation; I have a 06 stratus that looks a little empty on the inside and i wanted to add the mini Trip/travel computer that goes in the "storage bin" just above the radio and a/c controls. When I called around I was told that the unit cost like 0+ and that they would have to completely change my car's computer in order for it to work (around 0) so my question is; do i really have to go through hell and highwater just to get this thing (because all they want to do is get money out of me) or is it really just a "plug n play" deal that i could just grab from a pull-a-part place and add myself?