I have had at least one car from every Mfg. known to man, and not once have I ever seen a stock head unit with RCA pre-outs. RCA pre outs are usually only for the high end stereos, designed with the addition of amps and such to be installed as well, just for us very discerning audiophiles! Any shop like Best Buy will have what you need. Stay away from Radio Shack, unless that is the only store in town. [[ Just a tip, take the extra minute to wrap you RCA's with electrical tape to stop shorts or noise interference.]