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2014 massimo msu 500 rebuild/upgrade to 700

Working hard to hardly work
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Working hard to hardly work Rookie

Working hard to hardly work

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just picked up a massimo msu 500 for cheap, previous owner toasted the top end and it will definately need a rebuild, my curiosity is since alot of 700 parts crossover with the 500, would it work to drop a top end kit and head on a 500 lower? or would it have to be a complete engine swap? and would a 700 fit in a 500 easily?

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