Hello there.

I recently purchased my first sim-race setup which included this nice TH8A shifter i wanted. The only thing missing was the pad bolted to the shifter which makes it possible to mount the shifter to a desk/table by using the mounting bracket.

So i made it myself. (Don't mind the slotted bolts, i didn't have anything else)
 

The model consists of a top and bottom plate. The top presses into the bottom with a slot and features the same screw holes through which three M3 bolts go to the TH8A. In between the layers is the mounting bracket.
I think you could do without the top plate, i just printed it to avoid uneven surfaces, scratching, and metal/metal contact between the shifter and the bracket.

The print is made from Esun TPU. My TPU uses settings which aren't common for most TPU's to work best, so you might have to fiddle around with it or uses Bambu's default settings for TPU.
The print is made with 8% Gyroid infill which makes it squishy enough.