I’m assuming you removed the Autometer lens / bezel from the tach. Did you remove the tach’s outer cover? Just trying to visualize how you attached to factory instrument panel. Sure looks like it belongs there....I like it! Thank you for sharing!I did this back in the late 80s maybe?? early 90 I know I did not cut into anything I may have just made tabs to hold it in place I would have to pull it out? because I am not sure if I can get a good photo shot's from under the dash. I will have to check my photos to see if I did take any build pics of that I know I have some for how I did the other gauges. Those are all steel pods and Tapered into the dash.