GR Yaris Ripped side undertray - options?

[Crowd_Control]

I managed to rip off my side undertray in the snow. I can't even find an aftermarket alternative. The original was quoted at 350euro.
Do you know if the non-GR Yaris one fits since the back part of the chassis is not Yaris at all?
Do you know of alternatives? Am I searching for the wrong term "undertray"?

 

[Michael Knight]

That looks like a heatshield

 

[Crowd_Control]

That looks like a heatshield

Yeah, but that is what is in the picture. The actual undertray I am talking about is missing. The heatshield dangles without the support of the undertray fasteners. You can even see that one of the studs is bent.