Here's what you need to consider:
* Bellhousing: The bellhousing on the C4 transmission needs to match the engine block. A 1964 C4 likely uses a different bellhousing than later years. You might need to source a correct bellhousing to mate the transmission to your specific 302 block. Sometimes, aftermarket bellhousings can simplify this.
* Flexplate/Flywheel: The engine's crankshaft needs a flexplate (for automatic transmissions) that fits both the crankshaft and the transmission. The bolt pattern and number of teeth must match. There are variations here depending on the year of the engine and transmission.
* Torque Converter: You'll need the correct torque converter that is compatible with both the transmission and the engine.
* Shifter Linkage: You'll need the appropriate shifter linkage to connect the transmission to the shifter in your vehicle.
In summary, while adaptable, it's not a simple "bolt-on" job. You'll need to ensure compatibility of parts and possibly source specific components to make it work. A good parts catalog or a Ford transmission specialist can help determine the correct parts needed for your specific application.