This is a new set of high-flow light weight performance exhaust headers for Fiat 124 Spider and Coupe models 1972-1985. These will offer less weight and more horsepower and the cast iron manifold. These will not crack and fit 1600/1800 and 2000 engines. The collector pipe rotates for easy fitting and a high-performance manifold gasket is included but not pictured.we now have two different collector pipes available,one for 1600-1800 engines and one for 2.0 engines,so please specify which engine you have.