These are the flanges that are required for the Long Branch manifolds with the oversized 2.75" collector, running 3.00" exhaust pipes. (2) flanges required per car. Couple of notes on these flanges...these are not oversized flanges that our competitors sell. Oversized flanges will cause clearance problems with starters etc. These are the strongest and best fitting flanges in the market. Some of our competitors provide easy-to-break aluminum flanges in the name of "cost reduction". These flanges shown in photo are bare cast. ceramic coating in Silver or Gray avaiable at additional cost.