2500 HD Exhaust Differences Between 2010/2011

[Jim80]

Hey Guys, could someone help me out as to the diferences between the 2500HD 6.0L 2010 and 2011 models. There is a muffler I wanted that apparently fits the 2010 but not the 2011? I thought they were the same 3.5" in/out?

 

Thanks.

[newdude]

The whole truck underneath (frame, etc.) Part #'s for the factory systems from 2010-2011 are different.

[Jim80]

Thanks. I was looking at an aftermarket Flowmaster muffler and just wasnt sure why it fit the 10 and not 11.