I had another post asking about headers and mentioned the brands I have seen. Kooks. Stainless Works, and OBX. I know Stainless Works has a complete bolt in dual set up available. I have seen the Kooks Y pipe and seems like it has some restriction to it at some point but don't remember now where it was. I know a couple of people have said they have the OBX and said they fit good. I see the OBX available with resonators or with cats. I was wondering if anyone is running the resonators and if so how have they been? I know I had a Buick Grand National with the cat removed and it ran as clean as it did with it. So let's hear what others have had for experience with headers.