I have a 2009 Chevy Silverado 2500hd 6.0 gas w/ a 10.5 3:73 g80 and its whining. I have found a 2005 GMC Sierra 6.6 diesel with an 11.5 3:73 g80. What Im reading is that I guess something changed in 07 to not allow this swap. Can anyone tell me what changed or if I can use this diff? TIA