The VK 36.01(H), This short-lived projected was born in June 1939, when Krupp was asked to develop a 105 mm (4.13 in) armed turret. The turret walls had to be 100 mm (3.94 in) thick and the gun was a standard L/20 or L/28 howitzer, all of which to be packed on a standard BW hull, with a top weight of no more than 30 tonnes. It was then designated AW (Artilleriewagen). By mid-1940, Henschel was ordered to modify the BW Fahrgestell to mount the new Krupp 105 turret. At the same time, it was revised internally to accept the new Maybach HL 174, giving a 450 hp max output. The hull front had to be 80 mm (3.15 in) thick and the total weight was uplifted to 36 tonnes, sitting on interleaved wheels.