Headers that work on 4.8 and 5.3 will work on 6.0. The engines are exactly the same externally and clearances will also be the same. The issue I had with mine is the steering column contacts the number 7 header tube and both collectors contact the frame. Though I have room to scoot the engine back about 1/2" which will remedy the collectors contacting. Right now my truck is a 1993 trad BD 3.25". It's in the process of being redone with a 91 body and cab and frame is going eo be redone for SFBD. Not sure what brand the headers are as they came with the truck as you see it.
Pic is of the passenger side, but I can get a pic of driver side if you need.