Vintage go kart with a snowmobile engine

I have a neighbor with an old go-kart like that with a 25 hp Briggs engine. He tears around the loop street of the neighborhood occasionally. He has a roll cage and outrigger bars with scuff pads front and rear to help keep it from flipping. I will try to get some pics next time he buzzes around.

The outriggers look kinda like this, but made from tube steel and proportioned for the kart. It about doubles the width of the kart.

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