check out www.carmedia1.com and www.tms-electronics.com. tms is a very good online seller. carmedia1 has had problems with some customers however. i myself have had both really good and really bad experiences with carmedia1.
I'd also check out www.crutchfield.com. I've dealt with them many times and have never been disappointed. Their technical staff can answer almost any question and their shipping times and cost is excellent compared to most other competitors.
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