BMW 1998 Used Peace be upon you There is a 6-cylinder gearbox for BMW E39 or E38, 28 gearbox, guaranteed, 1200. Siptronic gearbox for E38 8-cylinder, model 96, guaranteed, 1500. Rocket gearbox for 8-cylinder 740 or 540, model 95 and below, 1500. And whoever wants to convert from automatic to manual gearbox, BMW conversion is available.