Ok a bit of an update.
Had the denali 3 piece 6.0 engine cover for quite awhile now. Been taking up room in the garage so I slapped it on real quick. Later I'll paint it along with other some other engine compartment pieces. It's 100% bolt on for the 5.3 and gives the engine bay a sleek modern look. All you need is a 10mm and 8mm socket.
Drivers side straight forward. Like it up and you'll see the screw holes on the intake system.
Passenger has the hose clamps. Just unbold the bracket off your 5.3 and remove it. Only held on by one 10mm bolt. Again line it up and you'll see the screw holes.
Bracket removed
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The middle piece you can use the 6.0 cover and lie to everyone or trace out the cut outs onto your 5.3 cover and use that. For now I'm temporarily using the 6.0 cover till I finish my 5.3 cover at a later date.
Final look.