Anyway, as usual I'm not going to tell you how to install anything. Revlimiter has outstanding instructions on the website. Instead I'll just post some photos and make some comments.
Just for reference, here's the old gauge faces just before I took them off. I just thought this was interesting. In 20 years of Miata ownership I've never seen these parts. I think they're wonderfully analog! New faces in place. Getting the needles lined up right. The only tricky one was the water temp gauge. It just wanted to read too low no matter what I did. I finally got it to point straight up when the engine is warm. That's close enough for this inaccurate gauge. Ditto the OPG. The numbers don't mean much. I checked the speedo against GPS and it's within about 2 mph at 40 mph. The tach seems to read too high unless I set it too low at idle. I don't care.The finished product. Here's how they look at night. This is a meaningless yet strangely satisfying modification. I think it bodes well for where I'm going with this car. More to come.