Invidia's 3" stainless steel downpipe for the 2003+ Mitsubishi Lancer Evolution 8 & 9 (Including MR) is designed to bolt up to the stock catalytic converter. The 3" design allows for excellent flow, while maintaining a proper gasket seal with the stock donut gasket ensuring proper clearance and the ability to move under engine load. The Invidia downpipe with mate to most cat-delete pipes if you decide to optimize your flow.
