Is if possible you get the dealer to retrofit the JBL speakers, does anyone know?
This is just a guess based on how it’s been on prior models: I think the answer is: yes, but it will be expensive. There are probably different speakers, perhaps different speaker grilles, Im thinking the one at the base of the windshield/ front of dashboard/ is different, may require different brackets, and then there are also perhaps some different hardware modules required like different amps and possibly different software for the head unit. I can’t give a guess on price, but I would say expect to pay a multiple between 2-3x the cost of having ordered it to begin with.