Waffenträger auf. Panzer IV Tank Destroyer

The Waffenträger auf Panzer IV was a German project that did not reach the prototype stage.
Variants:
1.
Name: Waffenträger auf Panzer IV
Type: Tank Destroyer
Origin: Germany
Year: 1943
Produced: 0

Length: 6.15 Meters
Width: 3.18 Meters
Height: 2.55 Meters (2.62 Meters with 150 mm)
Weight: ???
Speed: 17 km/h

Crew: ???

Primary Armament:
-128 mm Kanone 81 L/55
-150 mm sFH 18 L/29.5
Secondary Armament:
-???

Gun Flexibility:
40° Elevation for 128 mm

Armor:
~8 mm

Sources:

http://ftr.wot-news.com/2013/11/10/waffentrager-auf-panzer-iv/