The Big Question- R9 390/290 FRAMEBUFFER ON HIGH SIERRA - Does it work?!

I wrote this guide to getting an R9 390/290 (NON-X) card working on macOS Sierra (10.12) last year.

https://www.tonymacx86.com/threads/guide-getting-r9-290-390-non-x-to-work-on-sierra-10-12.210574/

Now, today I will be fresh installing macOS High Sierra on a new SSD, and will the guide still work? Let's find out! Update coming in a few hours....