This custom mounting piece will allow anyone to mount the GT diesel, the GT gas, or the WatchDog into any standard or custom gauge pod mount that is equip with standard gauge hole sizes of 2 1/16in. Installation with this custom mount with the T-slot design only takes seconds, the custom mount simply snaps into any of the standard gauge positions on a gauge pod. If gauge pods are out of spec then the gauge pods may need to be modified, be certain however that this custom piece will always be within tolerance so there will be no problem installing this gauge piece into any brand of gauge pod.