1964-1965 Muncie 4 speed and bell housing M20 M21 1964 1965 Muncie 4 Speed M20 M21 4 speed Muncie manual transmission and bell housing 3951325 main case 3846419 tailshaft case 3831707 shift plate case P0719 date stamp Bell housing. 3815891 Local pickup in San Francisco East Bay $525 Hot rod pickup roadster flathead Chevrolet Corvette Chevy II nova Chevelle impala camaro nova four speed stick shift gasser hot rod manual c10 gm Oldsmobile Pontiac firebird gto muscle car Trans 4sp manual Stick