Re: Early Muncie Decode
M-20's are two grooves
M-21's are single groove
M-22 are No groove
UNLESS
you come across an aftermarket input .
These also came with No groove's.
Same with Clusters
Groove's coincide with Imput's
And the factory M-20 Cluster's come with the anti-Rattle plate
riveted to the front of the Cluster.
Joe
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