Built Gearbox 4 speed Straight Cut Close Ratio A+ Casing. Choice Of Final Drive,3.9, 4.1, 4.3, 4.6 Central Oil Pick Up, Clutch Plate Tranex LSD Inc Output Shafts & Straight Cut Drop Gears. Built with all new bearings, baulk rings, layshaft, Please state Final Drive required on order Sheet.