Ok, here is a quick diagram done in paint. The dimensions are not correct, but you can get the idea. The top is how the turret should be, and the bottom is how the turret is on the Tamiya kit.
If you guys want, I can see if i can make a template for fabricating a new turret.
As far as the wall thickness problem, I think I have solved it. I am planning on leaving the doors open on the Sdkfz 222 to show of the interior, but the thickness of the Tamiya plastic was bugging me. I had initially planned to remake the entire body of the vehicle, BUT check this out. I stuck some sheet stock to the side of the kit with double sided tape, and trimmed around the edges. This gave me the plastic mock-ups of the wall, that will replace the kit parts. Oh, I used .04mm stock but the scaled down version should actually be .022mm. Anyway, I trimmed the walls of the bottom of the frame off the kit, as you can see in the picture. I left the engine compartment walls on to allow for a good section to glue to. Now, once put together, you will not be able to tell that the walls are thicker in spots.
For now the project is on hold because I had purchased the old Eduard set a while ago, but I just looked at the instructions for the new set and WOW!! What a difference. Plus, I need to get some tread plate for the bottom of the interior.
Oh, and
Dwight, if it is not too late, I would suggest making a badge with a jeep for the small AFV build. The jeep is small, tough and the outline is instantly recognizable. Well, it was just a thought... I am sure that no matter what you come up with, it will be great.