Quick view Nitrous Express Nitrous Express 99-04 Ford 4.6L/5.4L 2V Billet Fuel Rail Adapter - 16183 Compare $76.99 Nitrous Express solves another problem! Installing a nitrous system on a late model EFI ford can be a hassle if you don t have one of the new NX Fuel Rail Adapters. These high flow adaptors make the chore of tapping factory fuel systems safe and easy. No... Add to Cart Add to Cart