I created this after scouring the internet. Since I could not find a model I created one with dimensions taken from my broken parts. For best results run a 3mm tap through the holes before installation. I posted all the models I've made so far. The basic model was the test to verify fit. The other two are reinforced with one having corner radii added to refine the appearance.
I added another beefier version. I broke 2 sets with a few roll overs that were in the grass and not very violent at all. I believe the wheels are balooning enough to actually break the nerf bars.
I added a version in which the width was reduced to avoid rubbing the body.
The author marked this model as their own original creation.