One more thing..
Purchased for a 2010 Honda Civic LX sedan to replace my clogged catalytic converter. Header is designed to even attach to the stock catalytic converter mounting brackets. Installed and had a noticeably loud exhaust leak. A design change is needed though where the header attaches to the exhaust pipe. There is a shoulder on the OEM catalytic converter where the donut gasket sits to insure proper connection with the exhaust pipe. Your header doesn't have a shoulder therefore the pipes don't connect correctly. I found an old thread on a Civic website that addresses this problem by double gasketing by using two donut gaskets. This solved my leak problem. A cost effective fix for your product would be to add a spacer type sleeve with the gasket. If further explanation is needed, email me and I'll send pictures to explain.
