Don't remember if it was a 327/427 or the hp. Just remember it was a sleeper car. Looked like a family car, would out run most cars, put down some rubber, it was a real sweet hot rod.
My old memory isn't what it once was. Want to say it had 12:1 compression, I THINK. If that was the case, lead gas back then, may be an issue with keeping the chip munks out of the engine with today's gas.
I had an old 62 XKE with the gold head, 9.5:1, I THINK. It required minimum 97 octane or it had pre-ingnition.
That said, they are still real nice cars.