Would a 6.0 fit in my Chevy Silverado with a 4.8?

[Chad Dutcher]

I have a Chevy Silverado 1500 with the 4.8. I wanna get more horsepower out of my truck so i was thinking about dropping a 6.0 or a 5.3 in. would the 6.0 fit? Im almost 100 percent positive that the 5.3 would but im not so sure about the 6.0. What components would i have to change if i dropped another engine in my truck?