We take base engines from reliable suppliers such as General Motors and Origin Engines and build you custom power packs for your generator set or other custom application. Our packages are not built with a cookie cutter approach. They are built with reliable components and to your exact specifications so they meet and exceed your customers' expectations! Natural Gas, Liquid Propane, Wellhead Gas, EPA certified, mechanical export, complete power packs, or base engines with fuel systems; whatever your need, we can handle it. If you need "Reliable Horsepower" make sure IIS is your first call!