A couple of years ago IH8MUD member tim.korn.99 built a beautiful stainless steel rear bumper for his 80-series Land Cruiser. Judging by the CAD drawings it looks very well put together. Check the forum thread to see how it turned out. The fabrication work looks top notch.

Rear bumper design/build on IH8Mud

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Rear bumper design/build | IH8MUD Forum.