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07 There is no XFI kit actually designed to fit our application. So we needed to contact Kinsler Fuel injection for custom fuel rails with our bore measurements, and to supply the injector bungs. Since we are using a stock, Street Hemi intake, the injector bung spacing is not in the correct location with the FAST Rails. The injector pockets are on 4.8-inch centers and the rail ends are tapped for -8 AN fittings. No mounting holes were included in the rails, as Gary will be custom building the stanchions to use the intake mounting bolt locations.