The other day when was replacing instrument cluster bulbs and had the dashboard corner speaker grill open, I noticed that there was no speaker in there but there was a factory-looking foam insert beneath the grill covering the opening. I looked around inside and found the wire and connector for a speaker. The left side is the same.

I bought the car used and there was no record of anything audio related (in fact, the radio manual is not there either) Since then, I have installed the Alpine CD changer. I don't know why I never caught this one before, I guess I wasn't paying attention. But the system consists of the Bose Amp, the tuner, and the head unit. There are 11 speakers installed and now the two possible's.

So, what can I do? Will it hurt things to add two more speakers...which speakers/brand or original? Tweeters would be great right there.

Thanks for the help,
Chris