2019 AT4 Bumper upgrade

[MacPH]

Probably a stupid question, but is there any reason bumpers from a 2019 AT4 wouldn't line up and fit onto my 2019 non-AT4 Sierra SLT?  Looking to delete chrome, there's no powder coat or existing vinyl wrap that will match the mahogany metallic paint, and 9ft of color match from Avery runs almost $600 just for the film.  

 

Chrome painting is hit or miss as well, so looking to just buy OEM bumpers and paint.  Figured while I'm at it, I might as well upgrade to AT4 w/ dual exhaust cutouts and the different front bumper.  

 

 

Thanks

[Sotally Tober]

I color matched painted over the chrome on a High Country Lower Bumper and installed it on my RST.  It works as long as you put Paint Protection Film on it right away.