* TH350: The TH350 is a 3-speed automatic transmission that was produced by General Motors from 1969 to 1986. It is a popular choice for classic car restorations because it is reliable and easy to rebuild.
* TH400: The TH400 is a 3-speed automatic transmission that was produced by General Motors from 1964 to 1981. It is a heavy-duty transmission that is often used in high-performance applications.
* Muncie M20: The Muncie M20 is a 4-speed manual transmission that was produced by General Motors from 1963 to 1974. It is a popular choice for classic car restorations because it is strong and durable.
* BorgWarner T5: The BorgWarner T5 is a 5-speed manual transmission that was produced by BorgWarner from 1982 to 2007. It is a popular choice for classic car restorations because it is lightweight and efficient.
It is important to note that many factors can affect which transmission is the best choice for your specific application, such as the engine size, horsepower, torque, and intended use of the vehicle. Therefore, it is important to consult with a transmission specialist before making a final decision.