I installed my BC coilovers in about 4 hours. Keep in mind, I am a rookie and learning about cars as I work on my own car. The coilover install was pretty easy, but tedious on the rear. There are some really good videos on YouTube to learn how to install them. So I would recommend watching them before you install your own, unless you are familiar with how to install these springs. I installed the coils the way they came in the package and they look and feel great. The only con I would say is the fact that there are no instructions that come with the coils themselves. That’s definitely a mistake on BC themselves and they should fix that!