This place sells 3d printed door speaker adapters with a tweeter pass through.
https://carboncarsystems.com.au/shop...himp-86-rings/
And this is a video of it.
[ame="https://www.youtube.com/watch?v=yUE3GdqHSkE"]How To Install Speakers In Toyota 86, Subaru BRZ or Scion FR-S - DIY - YouTube[/ame]