All Magnums use the 360 oil pan. 360s do not share an oil pan with 273s, 318s, 340s, or poly motors. The rear is where the difference is so the timing cover's the same.
Correct, but there is a small difference as far as the one piece and four piece gaskets go and the notches at the corners of the pan.
To use the one piece rubber gasket those notched in areas need to be flattened out.
