I have a 1978 302 that is already rebuilt that I'm putting in a '64 falcon. The motor is pretty much complete with the exception of an intake. How do I determine what year or kind of heads I have? Doesn't appear to be any markings on them except for a "30" or could be an "80". Will an Edelbrock performer 302 work for just about any 302 regardless of the type of heads I have?