I am new to posting online, so please forgive me if I make any mistakes. I have a 1968 Mustang fastback that was given to me by my father. He is now terminally ill and is unable to help me. He always told me that I needed to replace the intake manifold because it leaks and the Holley carburetor. I remember him saying that it has a 302 and 4-11 gears, but I don't know where to find the numbers to determine the type of engine. The Holley carburetor has 1850-2 2286 on it and the intake manifold has C40E-9425-B on it. I am trying to determine the type of replacement carburetor and manifold that will work on it. I can look for more numbers if needed and even provide pictures. Thank you for your time.