UPDATE: I did a little more research and finally found this photo at the CJ-3B Page. There is a complete discussion of the history of the CJ-3B, including a note that the CJ-3B has a custom body extension and a Sears top was purchased that was also custom extended. It’s a good story to read.
I’m not sure where this image might have originated, but I spotted it at expeditionportal.com.