This 5 speed close ratio gear kit from Quaife features straight cut gears with dog engagement and is designed to fit the original 5 speed F16, F18 and F20 gear casing used in various Vauxhall / Opel models such as Astra, Kadett Cavalier, Vectra & Calibra. This comprehensive kit comes complete with a replacement heavy duty end cover, selectors and a crown wheel and pinion with a choice of final drive ratios. The dog engagement used in this gear kit provides rapid gear changes and we recommend using in conjunction with the Quaife Gear lever and turret assembly to get the most precise gear changes.  *Note - Input shaft has 7/8" x 20 tooth spline table.tableizer-table { border: 1px solid #CCC; font-family: Arial, Helvetica, sans-serif font-size: 12px;} .tableizer-table td { padding: 4px; margin: 3px; border: 1px solid #ccc;}.tableizer-table th { background-color: #104E8B; color: #FFF; font-weight: bold;} Ratios1st2nd3rd4th5th Option 12.3081.6881.3891.2001.045 Option 22.9102.0711.3891