In Arizona you may only get the Exede5 service because there's only one spotbeam (363) from ViaSat-1 for your area..
You can put your zip code in here and verify Exede5 or Exede12 is available for you and what the upgrade fees are.
Your Dish, Tria and modem have to be replaced to work with the new Exede5 or Exede12 service even if it's (Exede5) on the Anik-F2 or WB-1 satellite...and your dish has to be repointed/peaked to provision the new modem...
Your existing mounting hardware, including a pole mount can be reused and one of your existing coax cable can be used if all is in good shape...the Exede modem only uses one coax.
I upgraded and it's not free...the web site above will detail your upgrade expenses..--
Exede12, ViaSat-1, beam 342, Albuquerque Gateway, Denver AcceleNet servers