Old Subwoofers

Hey I have a pair of sub woofers that I was hoping that someone here could help me identify or get more information about. I have no idea how old they are, but they are called Power Drivers. I am assuming that they are for a car since they are 10" and operate at 4ohm each. each handle 150watts. I remember looking for them on the net quite some time ago and I could not dig up information so i am wondering if anyone here has ever heard of them..

Thanks
Ben