Sounds like a lot of work.
I ordered the Digital Dash in my 92 because I wanted a Tach. That was a mistake. The Tach uses bars to display engine speed. Each bar is about 250rpm. So it is impossible to get an accurate reading. Plus at 92,000 miles I was washing the truck, started it up to move it back in the carport and started to smell something. I look down and smoke was coming out of the dash. The entire assembly was shot. The shop was able to find a replacement in a junk yard for $500.00. When they went to install it, he called me and asked what mileage was on the truck so he could set the odometer. In my usual honest self, I told him the mileage to within a few hundred miles. I could have said any mileage like 62k or something. Oh well.
Matt