This is my 1966 GTO. I bought this car in September, 2013. It is a genuine GTO, not a clone. It does not have the original 389 engine, but has a 455. The best I can determine is that it is an early 70s engine. From the various block codes, I think it might be a 1971 455 rated at 325 horsepower. But with my luck, it is probably a 72-73 rated at 220 horse. It has a TH400 automatic. It is really fun to drive. I have been enjoying cruising around the neighborhood.