Chevy Silverado Gauges
The factory setup works, but you can take things to a different level. Chevy Silverado Gauge Clusters allow you to keep track of your vehicle's vitals, and redesign your dash while doing it. They are made in a bunch of styles, and they display just about any parameter, including air/fuel ratio, fuel level, and boost. Whatever looks you're into, old-school or modern, you can find it here.