This is an M20 WIDE RATIO OR M21 CLOSE RATIO Muncie 4 speed, YOUR CHOICE, for 1969 Z28 CAMARO, and is correct for other 1969 GM applications as well. This has a 10 spline input and 27 spline output. All internal gears are BRAND NEW, NO USED ANYTHING. Case is 3925660, extension is 3857584, shift cover is 3950306. ALL CASTING NUMBERS CORRECT FOR 1969 Z28. Everything in this unit, such as bearings, brass, sliding clutch's, shift forks, seals, bushing, countershaft and bearing retainer are, like the gearing, BRAND NEW. If you need a wide or close ratio Muncie for your 1969 Z28, or other 1969 GM application, you won't find a better one. WE CUSTOM BUILD THIS UNIT ON DEMAND TO FIT YOUR EXACT NEEDS SUCH AS SPEEDOMETER GEARING ECT. THAT IS WHY IT CAN BE M20 OR M21, YOUR CHOICE. 12 month NON ABUSE warranty on this unit. Case Coding to make a unit "Numbers Matching" to your application is available, CALL TOLL FREE for details and pricing. Questions? NEED HELP DECIDING ON M20 OR M21? Call our HELP line TOLL FREE 1-877-614-4327 Monday thru Friday 8:00 a.m. to 5:00 p.m.
Note: All Muncie 4 Speeds are Built To Order, Call Us With Your Application for Current Build Time and Delivery Date.