Smart Center Portland did a great job installing my springs. The first attempt discovered that Eibach had bad catalog numbers for the springs and they just didn't fit. When Eibach got things straightened out and got the first "real" sets to the US, mine was one of the first to go in. I heard there's a special tool needed to keep the front springs from spinning during extraction or install. Also, as with all springs, there are some pretty serious forces when removing the old set.
Eagerness is no substitute for care and experience which is why I was more than happy to have my Smart Guru take on the fun of the install. As an engineer, I'm not afraid to get my hands dirty but I'm happy to have greater experience available to me in the form of a great professional at my Smart Center.