Once that was accomplished, the fuel system got overhauled with an extra large 32 gallon tank and a Holley Sniper EFI fuel injection system for added ease of use and tune-ability. After that, both axles were upgraded to 4.11 gearing and limited slip differentials. Switching over to the inside of the truck, the factory radio was kept but upgraded to have Bluetooth capabilities. This Blazer is a Silverado package which gives the owner most of the options available at the time so the interior was refreshed and reupholstered to factory appearance with the addition of several small touches. First was adding 21st century speakers to the newly updated radio and adding several new speaker locations including one in each front kick panel and one in each A pillar cover, tripling the amount of speakers over the factory setup. Lastly a security box center console with cup holders was painted to match the rest of the interior. Overall the truck looks nearly stock, but hides many of its upgrades and 21st century features in plain sight for many to ask whether or not they are original.