Hows it going all...New to the forum. Figure i mize well start out with a good one. I have an opportunity to buy some 1962-65 327's which are marine motors. I was wondering what is the difference between marine and stock. I know they have a steel crank and one runs backward due to the cam and being in the same boat. The rest i am not sure about......Cam,heads,etc. Block #'s 3858174.