M22 "Rock Crusher" Identifiion The M22 closeratio transmission is easily identified internally from the M20 and M21 versions by the angle of the gear teeth. The M22 was only produced in a closeratio version, so it will not appear on models with high rear . Get Price. how to identify amuncie four speedhot rod. Jul 05, 2016 · Muncie fourspeeds were produced in two different ...
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