When performing a K swap it is necessary to modify your fuel system to integrate with your new motor. To do this new lines need to be measured and assembled. The Hybrid Racing Fuel Line Kits take care of this step as they are premeasured to ensure a perfect and easy installation. The kits are assembled using the best in hose assembly tooling and are kept in stock for fast shipment. All the fittings needed are included and before packaging the lines are pressure tested to ensure a leak free install.