Anyone know OEM Speaker Specs?

I want to REPLACE my rear 4 inch speakers and ALL I want to know is what the old OEM speakers were... size wattage specs, 4 watt 2-way? 3-way? amps?

I don't want to have to put an AMP in. I don't want to tear apart the side panels YET to find out.

Thanks!!!!!

The originals were 4" Clarion 2way speakers. Don't know the wattage but I am sure the max the factory stereo put out was around 25 watts per channel.