VMP exclusive!? The first billet fuel rails available for the 2020 Shelby GT500 5.2 L predator engine.? Our rails are a direct replacement for the factory rails and include all fittings, adapters, and a crossover line. We custom machine these rails to match the look and feel of the 2020 GT500 engine bay.? Beautiful and functional, these rails have No. 8 fittings front and rear to support future fuel system upgrades.??