Thank you sir!
This is my second MBRP Exhaust, bought one for my first diesel, a 2001 Duramax also. Both fit very well, like I have heard others say, the hardest part is getting the stock exhaust off. A few notes though, I have a crew cab with the short box, and it requires some trimming of the mid pipe. The dimensions are given, and I used a sawsall, easy enough, but some might not realize that. If you had a long box I don't believe any cutting would be required. I also got a free 5" tip when I ordered through XDP as one does not come with the MBRP kit I purchased. To make that fit to my liking, I also trimmed about 6" off of the tailpipesection because I wanted the tip to be somewhat flush with the fender. The only other issue I had was that the bolts for the downpipe to new exhaust connection were supposed to be included, and weren't in the box. It's just two bolts, not a big deal, but I had to go out and get some. Other than the bolts that weren't in there I'm happy. Easy to install, and fits perfect.