Obx is a great value headers,i was one the first guys who pulled the trigger and bought back in 2007 for my gmt900 denali,now I have a 15 Yukon denali and I need to install this headers,i found many on ebay but not sure which one 2 buy ,did u have any issues or modification while installing and can u look to the steering column and see if it is not touching the headers.
Great job & Gain