Sorry if this has been answered before, but I couldn't find anything. Anyways, I have a 99 z28 Camaro. I bought it about a year ago. It came with LT setup. The headers were coated and seemed to be on the car for a long time due them being good and rusty. About a week ago, the rust finally won out and a hole appeared in the drivers side header. I ordered a set of pacesetter headers and just received them.

Now for the problem, they didn't come with a spot for O2 sensors. My question is there a way for me to fix this, or do I need to send them back and get something else?

 

That sounds like a builder error. They should all come with a spot in the collectors are you sure it's not there? You could have one welded in. But short of that I would send then back and if you can afford it get some stainless ones

 

Send them back. O2 sensor should be on the collector.

 

It would be easier to take them to an exhaust place, have them drill a hole and weld an O2 bung in. I think that would be easier than shipping them back and waiting for another set. Just my .02