Putting two speakers in the dash, when it was only built for one

My dash has a single speaker in it. That worked fine for the original AM radio that was in the car. But now i took that radio out and stuck in something i could plug my ipod in(sorry you all original fans).

I have it wired up to the single speaker, but that doesn't give me much audio satisfaction. I'd like to put in two speakers where that one speaker is now.

I was just wondering if y'all knew what size speaker is in a 66 plymouth valiant and what two speakers would fit well in the same area?

I dont' really want to make new speaker holes in the dash or anything like that. I just want two small speakers in the same spot that the big speaker is in now.
Author: admin