Putting this out here for info only (because I have it on my 996 and I’m a huge fan).
https://ultimateaos.com/
https://lnengineering.com/products/parts-and-upgrades-for-porsche-boxster-cayman-and-911-engines/the-uaos-ultimate-aos/the-porsche-987-ultimate-aos-uaos-al-complete-kit.html
Not paid, just a very pleased customer. I have this on my 996 and I believe he has it for the 986 as well. Makes any future PCV changes a breeze, and the track kit will drain any accumulated oil back into the crankcase. I’m running 2qt over on my car.