I think if i were to be trying to alter it myself, i'd go down the route of reducing the neight of the actual sponson box which sits between the guns, thereby bringing the two turrets closer together. Maybe even half the height. Currently it's 6 rivets tall, including the trim at top and bottom. I'd reduce it to 4 rivets, the 2 on the trims and 2 in the middle.
That'd bring your weapons closer together and stop people from focussing their gaze between the turrets, at the very tempting hatch target.
The problem with that solution is that you're linking mechanism would need modifying.