Our lightweight Proflow fuel rail kits fit like stock, but deliver the increased fuel volume that your Street Rod needs for maximum performance. The 3/4 i.d. rails are precision CNC-machined from high-strength aluminium with a great looking finishes. The kits include fittings with Viton® O-rings for a superior seal, mounting brackets, and stainless steel hardware. NOTE: does not suit factory LS2 3/4 length injectors.