This 64-inch short 30 top stack with an 8-inch reduced to 5-inch O.D. plain bottom is a high-quality, chrome-plated exhaust that fits most makes and models. The plain bottom exhausts are measured by the outer diameter, ensuring a perfect fit for your truck. This OEM-quality product is sold individually and is designed to fit truck models and/or OEM replacement numbers. With its sleek design and durable construction, the Lincoln Chrome 11112015BJJ is a practical and reliable choice for any truck owner looking to upgrade their exhaust system.