My upgraded 2007 Yukon XL 2500 SUV is my everyday driver/fast grocery getter/family hauler with horse trailer and boat vehicle. I use it for everything! Under the hood, I have added a fully-built twin turbo, and converted it to an LMM Duramax diesel swap with a fully-built 6-speed Allison transmission. I had an S326 backed with S478 twins, cam and 40 percent over injectors and 85 percent over CP3. For the exterior, I added a FASS 150 Titanium fuel system, 4-inch exhaust, XD 20-inch wheels with Toyo Proxes tires. I have also added an 11.5-inch truck rear differential.