1. Complexity: The conversion process involves significant modifications to the vehicle's drivetrain and electronics. It requires expertise in automotive mechanics, fabrication, and electrical work to ensure proper functionality.
2. Cost: Converting an SC400 to manual transmission can be a costly endeavor, as it requires sourcing and purchasing various components, such as a manual transmission, clutch system, shifter mechanism, and related parts.
3. Compatibility: Some parts may require custom fabrication to fit the SC400's chassis, which adds complexity and cost.
4. Electronics and ECU Programming: The vehicle's electronic control unit (ECU) manages various functions related to engine, transmission, and other systems. The ECU of an automatic transmission SC400 will require reprogramming to accommodate the manual transmission, potentially requiring specialized tools and expertise.
5. Maintenance and Parts Availability: After converting to manual transmission, finding replacement parts and qualified technicians for ongoing maintenance and repairs can be more challenging compared to an automatic transmission.
Overall, while converting a Lexus SC400 to manual transmission is theoretically feasible, it is a demanding project that is best undertaken by experienced professionals with a thorough understanding of the vehicle's mechanics and electronics.
