Hi everyone, I need help on finding the correct flywheel for a 64 327 or one that will work. I have a 403 bell housing so it will take a 10 or 10 1/2 clutch. Does someone have a variaty of casting #s i need to look for. I have a 3791021 flywheel, not sure if that will work. Also are flywheels specific to a 10 in and 10 1/2 clutch. Thanks for the help.