5.2L or 5.9L (Magnum Engine)?? External Difference?

It will be on the side of the block on the drivers side. It will either say 318 which would be a 5.2 mag or it will say 360 which would be a 5.9 mag. The blocks are practically identical to the older LA motors. The magnum motors just have a different top end which is why I imagine they didn't change the castings on the side of the block to reflect the new designations.