In the very lowermost left and right corners of this picture, there are two tabs that are protruding off of your block. These tabs (bosses) have small flat areas where Ford may have stamped things like production #s, VIN#s and date codes. Go to
this thread about my block and you'll see what I mean. Using some steel wool you might reveal some of these interesting tidbits about your block as well.
This probably goes without saying, but while rolling this around your garage, it might be wise to get it up off of the bare concrete, and don't orient it so that it sits on the main bolts that are aimed at the ceiling in the above pic.