I have used the entire gauge cluster behind the glass (on the 41 and 65 which had square lenses), and on the ADs I rebuilt the original AD gauges with the stepper motors from the s10. I am also looking for a less labor intensive method, jkeating1 posted a manufacturer that says "tell us what you have and we will build it" and I am thinking of giving them a shot on the 49 I have on deck.
https://con2r.com/service-custom-instrumentation/
I think it was purported to be around $1000 bucks, but they sure are pretty
