OBX Headers

[cjweb11]

Found what looks to be a good deal on a full cat-forward header setup on ebay that says it fits the 2007 5.3L 4WD Tahoe (I have 07 z71 4x4)

http://www.ebay.com/itm/OBX-Full-He...Parts_Accessories&hash=item232c01cecd&vxp=mtr

1. Is this a good product / OBX a good brand?
2. Does anyone know a part number for this? (ebay seller is authorized dealer but doesn't list it and I don't see it or the part itself on OBX website)
www.obxracingsports.com
3. Any fitment issues?
4. Any gains in performance
5. Anychange in sound, cabin noise?

Also if anyone has suggestions/comments on other header setups feel free to chime in, thanks

 

[cjweb11]

So I just realized OBX headers don't have cats, those r just small resonators in front of the Y... won't work for me in Houston unfortunately

 

[ezdaar]

sure they will. just turn off the rear o2 and go to a hole in the wall inspection place.