Porsche Motorsport Gearbox 915 Revised with close Ratio gears, new synchros, etc. and LSD final drive 915 pinion crown wheel 7 31 1g. 13 32 2.46 2g. 18 32 1.77 3g. 19 26 1.36 4g. 22 23 1.04 5g. 24 21 0,87