MANUAL TRANSMISSION REBUILD KIT with SYNCHROS Fits 4-Speed Muncie M20 M21 M22 1963-1974. This is the Transmission with the cast aluminum case and 7 bolt side cover. It uses the 7/8" countershaft pin and an 80mm outside diameter input bearing. FITS ALL '66-'74 M21 M22 MUNCIE WITH 7/8" DIAMETER COUNTER SHAFT PIN. FITS ALL '63-'65 M20 MUNCIE WITH 80mm O.D. INPUT BEARING ONLY. This kit includes: BEARINGS. SNAP RINGS. WASHERS. SPACERS. NEEDLE BEARINGS (2-Sizes). GASKETS. SEALS. BRASS SYNCHRO RINGS SET. SMALL PARTS KIT. 7/8'' COUNTER SHAFT PIN. TAIL HOUSE BUSHING. COMPLETE SET OF KEYS AND SPRINGS. No Chinese bearings.