I got a set of these from Antonio last October.
They are still stuck on and have gone through numerous car washes,
hand washes, and my five year old, washing the car.
If you clean the window well, and once the window is clean,
clean it again with an alcohol wipe, you will be golden for installing these.
Just make sure you do it on a warm day.

Pete...

98.5 SE Sport Duratec ATX (P66L)
Black Clearcoat on Greystone
DOB 11/21/1997
DOP 12/25/1997
PIAA 510 Super White Driving Lights
SVT CAT-BACK EXHAUST (No Resonator)
DiabloSport Chip (LPQ4) - Engineered To Raise Hell
Too many other mods to list...
Sounds sweet, runs quick...
Crazy Horse Dyno @ 121.4 WHP/129.6 TQ