For sale: Rebuilt Muncie M21 Close Ratio 4 Speed Transmission. Main case (3925661). Very nice gear set and has been rebuilt to include the following: NEW bearing retainer NEW magnetic fill plug NEW synchro rings NEW synchro ring kits NEW hardware NEW keys/springs NEW front bearing NEW rear bearing NEW small parts kit NEW bushing NEW seals NEW cluster pin NEW gasket grade 8 bolts. The case was been media blasted, steam cleaned, painted and clear coated. All threaded holes have been cleaned and tapped. A custom shipping crate will be provided at no additional cost. The transmission came with a one year limited warranty when I purchased it, and is still good until Oct 15, 2017. Has not been ever out of the crate since I bought it in October... pics were from the gentleman who rebuilt it. The previous owner of my '70 Chevelle was nice enough to sell me the number matching original M21 that came out of my car.. so I no longer need this one. If you have any rebuild questions, I can put you in touch with the gentleman who rebuilt it. $1250.00 includes free domestic shipping, and the balance of the warranty (about 8 months). Thanks, Paul. [email protected]