I'm right in the middle of installing this kit but so far it's been easy and fits perfectly. Be aware, if using the Takara clear diffused psycho frame, there's a quirk with KOSMOS where the PG Unicorn's eyes are permanently white and cannot be color changed via the remote or the app. I thought mine was defective until I found a thread on Reddit explaining the quirk. I fixed it by using the original clear green eye peice that came with my Unicorn. Otherwise, I think it's a great bit of kit and loads more versatile than the OE Bandai light kit!