Volkodav,
Have you thought about a Leopard/ Panther chassis for your assault-gun? Since the Leopard (WW 2, not the modern one) was built with Panther parts you could cut a Panther apart and make it shorter. If you look at my StuH 7, I used a Panther II hull, with the roof cut out, and a new superstructure made from plastic sheet. You could do that to a Panther chassis, you could create a whole family of vehicles, SPG's, APC's, TD's, etc,etc based on the shorter chassis.
Here is my thought process on how/ why I create the stuff I do.
June 6/7, !944, Normandy.
The counter attack that was launched by the Germans on the 6th-7th, was successful, and a join up between the British, and American beach heads impossible. Someone finally calls the 17th Kreigsmarine district, and tells them to attack. The Germans launch a fierce naval counterattack with 'S' boats, and coastal midget submarines. The shipping used to support the landings take a beating, and fully 2/3 of the transports are sunk or damaged. At the same time the counterattack on land gains momentum, and the beach heads retaken. The invasion fails. Ike takes the blame, resigns, and is sent back to the U.S. in disgrace. The Churchill government in thrown into a panic, and is toppled. The Labor Party takes over with the promise of peace. The English people are sick of the war, and call for an armistice.
President Roosevelt has no choice but to go along and sign a separate armistice with Germany. The Germans demand that all the Lend-lease that is going to Russia be stopped immediately, and go to Germany instead. The Germans tell the President that if he doesn't do it, the East coast cities, will be bombed with a new type of weapon, the atom bomb (that they don't have any is beside the point). The next day flights of Me-264's are spotted flying above New York, Boston, Washington, and Norfolk Virginia. The Americans quickly cave-in to the demand.
When the Russians find out what happened they go ballistic. They see the separate armistice as a stab in the back, and a conspiracy to corrupt the revolution. They still need the goods produced by America, but where to get them?
The Japanese government reacts the same way, accusing the Germans of selling them out to the U.S. They drop out of the Pact of Steel, but need resources to continue the war, but where to get them?
The Russian, and Japanese governments start talking to each other. A deal is worked out in which the Russians will provide the raw materials, and the Japanese will produce them in their factories in Korea, Mongolia, and Siberia. A whole new realignment of the power blocs takes place.
In my warped world, it's the Anglo-Germans vs. Russo-Sino.
Just my thinking in a nut shell.
Anyway, I textured the entire hull of the Hood yesterday. It snowed here again, so I had to do something. Since all the conversion work is done with I should be able to put it together pretty quick. Enjoy the pics.