Hey guys, I just got my first mazda about 2 weeks ago. 2010 Mazda 3 sedan 2.0l. Wishing I had the money for at least the 2.3. Anyway, I have an expensive sound system I wish to install in my mazda (amp and sub), but I have yet to find a RCA adapter kit for the stock radio on the 2010+ mazda3. I...