I was asking a week or so about the bag "difference" in 2500's and 2600's, the guy that was selling the bags said the 2500's are for the front, it was in the parts section somewhere. I dont know if this helps you any.
Sorry I was wrong, it's the other way around.
Read here...
http://67-72chevytrucks.com/vboard/s...d.php?t=420403