When you put this on your 6.6L, you'll remember why you bought a big V8. This thing shows what your truck should have sounded like from the get-go! This amazing sound, coupled with this system being available in T304 stainless steel and aluminized steel it makes it the perfect system for anyone looking for improvements over stock. Part # S5093 Fits 2020+ GMC/Chevy 2500 & 3500 6.6L