

You spent hours in that thing and phone speakers are not made to be louder than traffic and drive noises, especially not for so long. Also a radio offers traffic and accident news from local stations. And if they cheap out on speakers I am quite sure they also don’t offer USB ports to charge the phone you run in lieu of a build in system
They shouldn’t be an upgrade. Basic speakers are like 50 bucks, for an item that costs 20k, thats a drop in the bucket