How do you make transfer box for vauxhall cavalier permantly 4x4?

To convert a Vauxhall Cavalier to a permanent 4x4 setup, you would need to replace the existing transfer box with a suitable 4x4 transfer case from a compatible model, such as the Vauxhall Calibra or similar. This involves modifying the drivetrain, including the driveshafts and possibly the suspension components, to accommodate the different power distribution. Additionally, ensure that the vehicle's differential ratiOS match to maintain proper handling and performance. It's crucial to consult with a professional mechanic or specialist for precise guidance and to ensure safety and reliability in the conversion.