BYD Seal OBC 7kW to 11kW

I have an Aussie delivered 2024 BYD Seal Performance that has an onboard charger of 7kW which is super annoying when other international versions have 11kW. I know it wouldn't be a simple 5 minute thing to swap the OBC, but does someone know what all the parts one would need to achieve this change? I'm assuming an auto-elec could do the fitment pretty easily?