Muncie M22 4 Speed transmission in 26 spline input, 32 spline output. This unit is built with all new gears that are from Auto Gear Co. and all other internal parts are new such as bearings, brass, forks, seals, small parts ect. ALL NEW, no junk! Original 3925661 case with orginal 3978764 tail housing. This unit is availble at this price with the original 2.20 / 1.64 / 1.28 / 1.00 ratio gearset. Wide ratio, 2.56 / 1.91 / 1.48 / 1.00, and the NEW ULTRA WIDE ratios 2.984 / 2.043 / 1.474 / 1.00 are available as well at ADDTIONAL COST. CALL TOLL FREE 1-877-614-4327 for addtional information on these sets and thier cost. All the best with a  12 month non-abuse warranty.  Photos of this build - up are included, feel free to look. Questions? Call us TOLL FREE 1-877-614-4327