Can you give a rundown of how you made it? Pretty keen to learn how to do it.
Might do a write up one day. Basically, i gutted out the cluster and put in an arduino mega2560, this handles frequency counting for RPM and speed, analogue digital conversions for boost, fuel, water, oil pressure etc. I did a lot of data logging to work out the conversion from voltages into temps,pressures. The arduino sends the data to a raspberry pi 3 which has a script i wrote using python which basically collects the serial data from the arduino and moves needles, displays numbers. Took about 6 months because i didn't know anything about python or raspberry pis before this.