Here are the gauges in my turbo from right to left. factory boost, stock speedo, NHS replaced the small turbo gauge with a clock in the tach, I made the 3 gauge pod with oil temp, oil pressure, gas gauge, oil & alt lights, I took out the gas gauge dial in the gas gauge and replaced it with a volt meter, rotated the gauge 90 degrees with the tank gauge on the bottom. The big silver knob is the manual boost knob.