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Identify Rock Crusher Four Speed Trans

Muncie Rock Crusher 4 Speed Transmission 2014 9 4 How to Identify Muncie 4 Speed Transmissions Identifying Muncie 4 Speeds III by Paul Cangialosi The most popular question has to be that everyone thinks they have the famous rockcrusher M22 4 speed This had the same gear ratios as the M21 but with a heavy duty gearset