Looks like I asked prematurely. I figured it out. It was simple once I worked it out in my head.
I used a 6" extension and a 3" extension.
1. Remove stabalizer cross bar
2. Insert 6" extension into plug hole
3. Connect 3" extension to top of 6" extension
4. Remove plug
Reverse to install.
I couldn't fit a 10" extension in there ,but if you start with a 6" or so to clear the cowling, then connect a 3" and your ratchet to that, you're golden.
7 out of 8 were smooth sailing. Of course there was 1 that was a PITA. That's the back plug, closest to driver's side. The cowling bulges there, there's a vacuum hose, and it just sucks. I had to get very creative with that one lol...but still very dooable. If I did it again knowing what I know, it's only a 30 min job.