A BIG thanks to you guys who gave me great help and advise!
I must admit that when I first setup the elmod system on my tank, the first priority was to make sure that everything would run properly. That's why I did not give much thought to issues e.g. 'Where am I going to place my elmod speaker?', 'How should I run the wirings?'...etc
Now that everything is running as it should, I'll be bringing my tank back to the workshop for a week to redo everything, including upgrading the tank to metal gears and gun barrel flashes, as well as carving out space for the battle unit module.
Hopefully, you guys can see a better Panzer III next week.