CJ-2As up to late 1948 had an entirely different frame than CJ-3As. The 2A frame was made up of many more separate parts. It was similar to an MB frame where weight was a very important factor. Late 2As and beyond had a simplified frame, with less pieces, but overall it was stronger (and heavier). So to answer the question - CJ-3As do not have the bumper gussets.