Engine Swaps

[Classic Elky]

My 5.3L engine lifters and camshaft have worn so that the engine misfires. I understand from other posts that some believe that the active fuel management (AFM) system has led to that type of failure. So, I am desiring a bigger engine. 

I am interested in replacing the 5.3L engine in my 2011 Silverado with either a 6.0L or 6.2L engine. I am interested in knowing if the engine mounts are compatible.  Are all 3 of these size engines from the same casting (block size)? Are the intake manifolds compatible? Is the belt assembly compatible?

If you are familiar with any of these aspects I would appreciate your input. I am hoping to purchase an engine that I can take the belt assembly and the intake manifold from the 5.3L to either the 6.0 or 6.2L engine. And, of course, use the same engine mounts.