We spotted this at the 2002 CMCA Rally at Barcaldine. Made from mild steel and quite neatly welded it was quite functional. The rear bumper attachment points had been beefed up and we could spot no surface fractures. We liked the clever yet very simple way of holding the wheel rims in the channels. Note the piece of Teflon reinforced hose held on with cable ties. A good way to protect surfaces (below right photo).