Billet aluminum fuel rails for use on LT1 Atomic AirForce intake manifolds. Fits manifold part numbers 2700, 27003 and 27004. MSD's new Atomic EFI billet fuel rails enhance the great looks of your Atomic AirForce intake manifold. Available as rails only, or as complete kits that include all necessary plumbing, these fuel rails are a perfect addition to your engine bay. The bright dip, black anodized finish with laser etched logos will look great for years.