FS: muncie m-21 close ratio 4 spd

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for sale-clean 4 spd muncie, m21 close ratio. main case 3885010, tail housing 3857584, sidecover 3884685. course spline input, 1 ring. P7M18b (the b is kinda messed up. but all the numbers correspond to an m21 anyway. $800 obo. needs a home soon