@fonguy961 Something could be there with the pins, someone with a voletmeter get in there and check those pins haha but I doubt you'll find 2 harnesses to work in there and free up the 4 wires you need for your two speakers.
@JoshG it's not that's what I have in my car, I really should rewire it since I have the new head unit, I'll comment back if I notice a difference in sound.
@Darylin Knew it haha they got me the same way, when I went up for an oil change I asked them to check my rear speakers because I wasn't getting any sound, come to find out it was because there were no speakers back there. Are you getting a double din or a single din? I haven't seen a dash kit for our cars yet but if you go doulbe din you won't need one. I suggest checking crutchfield, they should have something.