Back when I purchased my BF AMSEC, it came with an electronic keypad. I had 2nd thoughts after receiving the gun safe, and started calling around to different locksmith shops to have a dial installed. They all thought I was nuts wanting to convert to a dial. One of the locksmiths even quoted me a discount if he got to keep the electronic keypad after the install. I never did the dial conversion.
After looking behind the door panel at the inner workings, I would not hesitate to do the dial conversion myself. I was really surprised at how primitive and simple the bolt work was on my gun safe. Keep in mind though, that I was a journey level machinist for years, and we built some really high tech automatic multiple drilling and tapping machines. If I still had access to a machine shop, I would retrofit a really cool bolt work set up in my safe, and install a plexi-glass door panel inside.