Is it possible to convert a 1988 Honda Prelude 2.0 si from manual an automatic transmission?
It is possible, but it would be a complex and expensive project. You would need to find an automatic transmission that would fit in the Prelude, and then you would need to modify the car's driveline, suspension, and electrical system to work with the new transmission. It is also important to note that the automatic transmission will not perform as well as the manual transmission, and it will likely reduce the car's fuel economy. For these reasons, it is generally not recommended to convert a manual transmission car to an automatic transmission.