M-20 Fresh Rebuild - all new soft parts - Nodular iron mid-plate upgrade - New gears - New input shaft / 4th gear - New sliders, shift forks, syncros, etc. - Japanese bearings - Later style hubs and syncros - 10spline input / 27 spline main shaft - Ratios 2.52:1, 1.88:1, 1.47:1 and 1:1 perfect for higher geared cars - Core required - Warranty