Kick panels with speaker holes?
The ones that the Paddock used to sell are different from the ones in the YO link. They had either Taiwan 100 watt speakers or 130 watt Pioneers.
The panel itself is ABS plastic. It won't take nearly as much flexing as the stock KPs will. If the carpet is not overly thick, the panel fits perfectly. Even the screw hole lines up.
I bought the Taiwan speakers and have them hooked up to a Clarion head unit and a 32 watt RMS @ 8 Ω/ch amp. The sound is OK. They are a light on bass response, but I expected that.