I am looking into buying a 1966 Ford Mustang from my friend and I was just wondering how much horsepower it was. I asked my friend but he didn't know. I could probally find it somewhere. But this is easyer. It is a 1966, coupe, 6 cylinder, automatic transmission, Ford Mustang. It is not a Shelby Mustang. Just a standard Mustang. It needs a little work, but the engine is fine. All orignal parts. Thank you!