stock stereo

I have an '04 liberty limited. I was thinking about hooking up my subs from an older car, but this is really only possible/my willingness to do it, if the stereo has RCA outputs in the back... does anyone know? I didnt look into pulling out the stereo, as it seems all the screw's etc are in the back of the dash panels...

any thoughts would be nice

also if someone else has done this, is there a week point between the firewall (that blocks the engine and the interior of the car) where you would suggest running the power from the battery to th eamp?

thanks

ive installed a few steroes in cars that have the same stero in them and none of them had the rca hook ups for it

You need one of these

http://www.crutchfield.com/S-DaOTK2LDoiz/cgi-bin/ProdGroup.asp?g=721