This is an 1/8″ thick aluminum replacement for the factory instrument cluster that fits the factory 07-13 GM truck location and has mounts for the Holley 6.86″ EFI Pro Dash (Part number 553-112) and 7″ dash (Part number 553-106). Easily painted, polished, or powdercoated to your liking if you want something other than the brushed aluminum look. This is to easily and securely mount either of the holley dashes without any modifications necessary.