A friend of mine owns a Nissan Navarra pick-up and just had all his windows ionized. They came out great, better than any foil tint I've ever seen, with no risk of scratching or fading.
Has anyone done the same on a Mustang?
How hard is it to unmount the rear window and the 1/4 windows?

 

What did it cost and who does a thing like that?

 

In total it cost him around EUR 150 ($190) for 4 side windows (it's a double cab) and the rear window.
Unfortunately I just found out they don't do windows which are "glued" to the frame, only door windows and the ones fixed with weatherstrip. Too bad...