That would be Crawford Z Car.

I'm not defending Crawford here, but this thread got a little off track.

Based on a number of comments posted here over a long period of time, there seems to be people who are not affiliated with Crawford who find their headers worthwhile.

Similar is the common theme that Borla owners are not that excited about their headers from a performance standpoint.

When deciding on what to do, headers are not something that can be lumped into a large category, across brands, and simply discussed whether there are gains.

I'm not endorsing the Crawford headers. I haven't ever even seen them. I'm just saying don't immediately discount something because a manufacturer says it, while you soak up another's opinion about headers not being worth it.

Maybe they aren't worth it, which is all relative to the size of your wallet. If there are gains to be had, I'd like to see them discussed.