I had the Cyclone Blackjack headers on my 68 Firebird for 14 years. I could never get them to seal against the heads. They would start to leak after just a few times out and gradually get worse. Had to change gaskets at least once a year. Everytime I drove the car I smelled like exhaust. Installed Hooker super comps 3 months ago. They fit well and, no leaks. As far as I'm concerned, like the TV commercials said, "You can pay me now, or you can pay me later."
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Rick
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