The automatic gun would need an extension for the auto-loader, more ammo storage, r/o, and radar set. I liked the rear hatch, so I flipped it up-side down and cut it off. The resulting flat spot is where the extension will go.
I drew out a quick overhead view of the extended turret to check spacing, and layout, and the black line is center, and is for alignment.
A couple of problems have popped up, but they are fixable. The chassis is an old DML Panther 'F' with the heating tower, and the extended turret won't fit with it in place. Instead of chopping up the engine deck, cut off the turret ring, move it 5 mm to the rear, and your done. The turret will still clear the hatches in front after you move it forward.
The other problems have to do with the radar, but I'm not at that stage yet.
All this took place in the last 3 days, while weathering the bear, and yes I went work.
Enjoy!