I own a set of these for those asking questions. They ride better than stock, and short of the fact that the top camber plates aren't really accessible when installed there's nothing about the install that's not straightforward. The access is a Fiesta design issue not an ST-XTA one. Good price on a nice set of coilovers. Keep in mind that these are made by KW.
OP, not wanting to piss on your thread, just thought I'd answer as a third party with nothing in the game. GLWS.