Alright so long story short, I’m getting a little tired of my 10mpg with my 2008 6.0l and looking to trade it in for a nice Duramax. Im having a hard time finding a LMM in the cab and bed configuration I want (extended cab long bed) but the LBZs are everywhere. I did some research and found that the engines are practically the same so it’s just a matter of body style preference. It’s this correct? What do you guys think?