This 1986-1987 Turbo Regal crossover pipe is made in 304 stainless steel. (Stainless steel is the best material to use for the exhaust since it can tolerate high temperatures. Each crossover pipe comes with the flanges already on it. It is mandrel bent and is a true 2-1/2″ diameter throughout. The fit is perfect to the application. Many of the original crossover pipes have gotten dented over the years, so this is a good time for replacement. The crossover pipe is 180 grit, so if you have the time and energy, you can buff it to make it shine. An excellent replacement item for any exterior restoration.