228 exhaust rattling

[g h j]

some help please , my sons 228 is rattling like a goodun from the back box ,now years ago on any car with the same problem we would drill through the box and fire a self tapping screw through ,i assume the modern box has baffles in them but don't really want to go the old school way ,any ideas please

[Andy70]

Buy a new back box if the rattle is inside, or secure it better??

[Andy70]

or it could be a heatshield loose? I've had those rattle a treat on the backbox before now