I agree, with everything said, it looks the part, always the easiest way to ID a 1275, is they have no lifter covers. It really wouldn't matter if the the engine was earlier than a 74, unless you had to be smog complient, but appear to be a 12G1316 cylinder, everything on 1275 interchanges thru the entire prodcution run as for a inline/RWD motors. If it a 74, it may have the roller bearing pilot bushing and thats Ok too.