Figured I would give a quick review on these in case someone is on the fence. Installed them in about an hour. Poly on both ends. I went with the Steeda setup mainly because of their bold claim to have no NVH and as hard as it may seem to believe they are quiet as stock! Car definitely feels better planted around turns and inspires a bit more confidence. If your as anal as I am when it comes to noise and vibration these are the LCA for you.