My outback came with a factory sub that sits under the driver seat. It also has component speakers in the front doors. I got the changer for $50 on ebay. Seemed like a good deal to me. Little did I know that finding the cable would be such a b*&$ch.
I use to have a killer system in a 96 ext cab K1500. Xtant amp, eclipse CD, JL sub, Boston ProSeries components in the doors. Had to sell it due to 2 kids. The OEM Subaru stuff plays Barney and Friends sing your favorite's just fine. (ha ha)
Later
Pete