Molded to the original dimensions with ease of installation in mind. Use your gas lines. Complete with hardware and installation instructions. The poly gas tank is made in the USA, and was designed exclusively for 1949-54 Chevrolets with the latest technology. With safety and durability being the top priority the poly tank will never rust and is made to last. Most new cars use a poly tank for this exact reason. The alcohol in gasoline will separate and sit at the bottom of the tank causing rust issues in a steel tank. With your safety and restoration in mind the poly tank is highly recommended for hassle free maintenance, and to keep your old Chevy on the road for years to come.