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Old 08-17-2012, 06:50 AM
AutoGear AutoGear is offline
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You can see the M20/21 gear on the left vs. the M22

Only the M22 has the straighter cut
The M22 was available only with a 2.20 1st gear (should have a 3.73 or numerically higher ratio)
26 spline inputs and 32 spline outputs only mean the transmission was approximately 1970-1974 This is not M22 specific
All kinds of muncies have cases with drain plugs now
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