I am looking at a 1965 Mustang that is believed to have a K Code engine. The block is stamped in the correct place but the characters look like a 2nd grader stamped them as they are all helter-skelter. None appear straight up and down but are either rotated to the left or leaning to the right. The stamping is consistently light though and difficult to read. It looks like the VIN starts 5F. I have very limited personal observation of K Code blocks, but they have all been neatly hand stamped. Has anyone seen VINs stamped all messy like this?