On April 19, 1944, representatives of Krupp arrived at Ardeltwerke in Eberwald to discuss the design of a standard self-propelled gun with an 8.8 cm Pak 43 gun. Ardelt offers a second series of designs with Pak 43. This standard self-propelled gun has been designed with significant improvements and is quite satisfactory in both driving and fire tests.
At the R&D and manufacturing conference on January 9, 1945, the progress of the self-propelled artillery on the standard site with 8.8 cm Pak 43 was only: despite the use of the fastest delivery method to obtain delayed parts, in December 1944 Only two cars were manufactured before the 31st. All delayed delivery parts will be available by the end of December at all costs. If this plan is implemented, 19 vehicles should be completed by January 15, 1945.