Autozam AZ-1 / Suzuki Cara Rear Panel
Here you will find all the rear panels you could possibly get for your car!
Original
The original panels were injection molded plastic. Stock panel looks like this
AUTOGIANO
Fiberglass rear panel with vent hole
Comes in many variants of mesh.
https://autogiano.com/list/ma/list_mre.html
RICE ROCKET R
Part of the RICE ROCKET R body kit. Has two vent holes to help dissipate heat.
Maybe MADHOUSE
Looks like an aluminum slotted panel to help with heat extraction from the engine bay. This is from a YAJ listing. Looks well used.