For only a few $$$ you can strenghen up the factory oil and fuel tank skid plates by welding strips of 1" x 1/4" band strap or other similar metal strips to it. It only takes a 1/2 day to do it . It's not the most glamorous looking mod but you can't believe how much it improves on the original....
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"Better to be judged by twelve then to be carried by six."