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That will be cool! Looking forward to that! I have wanted to do a 100cc kart Mac too
McBob had a 91b engine in what I think was a Super 44 chassis that he ran in some of the Aussie races. He said those motors are really strong - from what I saw
in the one video, his modified 91b was right on the heels of a stock 101 in 20" wood.
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