Afriend of mine said according to the numbers he ran on my car that my car was originally equipt with a powerglide trans and a 396 BB. He also said that it is a true ss which I know, but is this combo common. I also have a bench seat and the shift is on te column. Could this car have been ordered with drag racing in mind with the original owner wanting the car to look like a sleeper? any comments would be appreciated!