Background: 01 Tahoe, 4wd swapping in lq4, tbss intake, 90mm TB, ls6 cam

I want LT headers, but all the muffle shops around me are scared to alter the exhaust system cat forward, or removing the cats. So I'm looking at the obx catted sytem for 99-05 on eBay. Has anyone uses this system with 6.0/4l80 4x4? Any issues?

 

since there haven't been any responses, if figured that I must have missed something while searching. If I did after searching more I can seem to find what I'm looking for. I've looked at exhaust manufacture website and 2001 model year Tahoes seem to be included in some of the fitment charts and not in others. Is there anything special about 2001 or Tahoes to be concerned with.