Okay i am in no way affiliated with quadzilla, i just thought it was a cool way to get digital gauges and it works with almost everything.
It is called the commander and it looks alot like attitude.

Yep, Quad is a great guy and he spends alot of time on Dieseltruckresource.com, he has kept us up to date on the progress of his monitor. I am sure that it will be awesome due to the amount of time and testing he has put into it.

I noticed the site mention above is Dodge/Cummins related. Here is the link to the device for GM: http://store.dieseltruckresource.com/20chdulb13.html