My new coach came with LEDs and I am sure the King and MM are in the same boat.
But if it makes you feel better, Prevost has some new side marker lights that have 8 LEDs in them instead of the 4 used in the 2001 vintage coaches, so I have ordered replacements since I want to stay on the "foreskin of technology".
However, I doubt they will look as good as the LEDs on your new Corvette.