XSIintegra

I know that a couple years back, before a lot of the manufactures started making complete units, you could build very simple control boxes and LED Readouts. I'm looking for any info on how to build or where to buy one because I have a new project to work on. On my '92 Integra, I have an extra clock that screw with, so I figured why not work it into an in dash Wideband O2 readout. Its a great location and keeps me from bolting another gauge into my dash.

I already google searched and didn't find a picture of what I'm trying to find. Let me know if you have any insite.
Thanks!