Check this out thread and my post in it, on my Optiplex 3050 (newer gen) I have for Hackintosh tinkering it worked after I've done this: https://www.tonymacx86.com/threads/no-audio-device-optiplex-5070-sff-opencore-0-6-2-catalina-10-15-7.305259/page-2#post-2236757
I don't want to be that sour person, but it looks terrible. It has also been done before (it always looks terrible, though). I would've just wrapped it in gray vinyl and be done with it, but if you like how it looks, I guess that's all that matters. How much did you get it for?
I also had issue with Optiplex (3050 SFF) where the alcid=11 didn't work by default.
But I finally got it working working. I followed the instructions at SSDTs: The easy way.
Booted Linux live, git-cloned SSDTTime, ran it (python SSDTTime), dumped DSDT (#8), then ran FixHPET (#1), grabbed the...