Right, Stone Vos does not install.
Any mobile RV tech could do an install too. I would order from Stone Vos (or Tough Tops) and then look around for a local installer. Once you've done one, it's a fairly easy task, so finding a competent installer shouldn't be too hard.
2004 American Tradition; 2014 Buick LaCRosse
Homebase in the Ocala Nat'l Forest near Ocala, FL