There's a mod that enables vanilla hidden settings to make surface block appear thinner and have no colliders. You do not need the mod for the thin or colliderless surfaces to load in. After that it's just carfully moving the surface node into the shape you want. as for the chassis, that's just scaling, done with the very same mod that enabled the options i mentioned earlier. Skinpacks add the final touches.

How? Fucking how?

perfect

-Perfect replica
-SmOOth handling (needs practice to master)
-amazing to drive in race tracks
-could be faster

9/10 strongly recommend trying this creation