In 1959, the first designs appeared for mounting 105 mm guns on the Kanonenjagdpanzer. At the same time, there was the problem of the barrel sticking too far forward. As a result, the KanJpz-2 project was started. The gun system on the vehicle was moved back to the right side, and the hull front was asymmetrical. The project stayed in blueprints, but much of what had been planned for the KanJpz-2 was used in later projects.