[Azatlas2019]

It wasn’t easy but it got added to the se/tech $80 for the pair of pillars from the dealership. You have to remove the 3d row seats to release the seatbelt to add the rear pillars.
https://flic.kr/p/2jv8We6

 

[Krcooper9]

Looks great! How did you tie in the speakers to the existing system?

 

[Azatlas2019]

Tap into the 2nd row door speakers