In Denmark we have been running an 1:24 CanAm class with German White point nylon chassis for years. Since White Point stopped making this chassis, I have made a 3D printed modified copy, but from 2017 metal chassis has been allowed with max width 50mm and no chassis movement, only body mount (h-plate) may move.
Here is my latest version, using a modified German Schöler chassis. Body is a Dilworth repop, decals etc my own production