You can change your car's transmission if you desire to, and you need a good auto mechanic to carry out the process correctly. Most transmission changes are from automatic to manual. Seeing that the bulk of vehicles in today's market are automatics, those replacing them with a manual gearbox are mostly passionate drivers. Despite the thrill of getting what you want, mistakes during replacement procedures can leave you broke. Buying a car with the desired transmission system is better than changing it later.