2004 Pontiac GTO Long-Tube Header Installation - Easy Breather
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Using a hacksaw or power saw (trust us, you'll want to use the power saw), notch the new catalytic-converter entry-and-exit pipes to help them seal better. Before cutting, insert a rag into the side of the catalytic converter to keep metal shavings out of the unit, which could cause it to fail. View Related Article
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