On the '08s. What separates, if anything, the 6.7 Cummins from the 6.6 Duramax and 6.4 PSD, in regards to tailpipe design?
If you're unfamiliar, the 6.7 is a straight, no holes, single slant-cut tip. The 6.4 has a dual pipe thing, like something you'd make fancy shapes in potatos with, and...