This is what PHP website says:
"UPGRADING YOUR EVOLUTION CS / EVOLUTION CTS to a GRYPHON CS / GRYPHON CTS
You do NOT need to send your Evo CS or Evo CTS to us to be upgraded. If you own an Evo CS or Evo CTS, you'll need to fill out an order form for Gasoline, 7.3L, 6.0L , or 6.4L Calibrations to be delivered via Edge's Fusion Software. When your custom tunes are completed, you will be able to download them directly to your programmer.
If you currently own a Gryphon with custom tunes and purchase a CS or CTS from PHP, we will load your custom tunes onto your new programmer at no charge."
Sounds like you don't even need to send it to them. Here is a pick of the unit currently in the truck.