I'm not really sure what part number to retain chimes and all that. There are multiple different ones and they should still work for you. My guess is the rca 's in the back you see are for a sub amp. And they bypassed the factory speaker amp under the console via cutting and connecting the wires before and after the amp and are running the speakers off the radio. I have seen that done and have done it many times. So one of the metra kits has its own mini speaker that will play the chimes if that's all your looking for.