There is one place I got tunes for the 5.3 I had supercharged, Westers Garage. Most vendors will at least know who he is if you call them, and he made a great PCM swap tune for the Supercharger.
I had to have him back it down when I got back to CA though because they sell poopy gas here.
Joining many of my brothers in the migration.
No diesel here, sold it 2 years ago, but I have my Chevy Conversion Van (aka Dream Machine by my golfing buddies that get to sleep while I drive everywhere) and of course, my Prius.
Currently I'm banned from PriusChat another few days, they tend to...