The cooler insert is a part produced and installed in-house. It is best to install this option during production.
The aftermarket installation process would include the removal of the caulking and screws to take the top of the console off of its base, de-rigging of the steering system, engine cables, wiring harness would have to take place so the top of the console could be removed to turn upside down to install the insert. It is not impossible just very time consuming.