Thank you for the videos! I was paranoid about doing the swap myself after reading how some of the posters had an uneven bumper post-installation. But after my dealer quoted me $200+ for labor, I decided to do it myself!
With my iPad in the garage and your videos, I was able to do it by myself within a couple of hours. I used the ZL1 grille from Patrick @ gmpartshouse.
I didn't jack up the car and remove the wheels, but if you turn the wheels all the way to the opposite side you are working on (working on drivers side = turn the wheels all the way to the right), its pretty easy with the right tools (socket extension, socket driver, etc).
The only thing I forgot was to put the "teeth" back on, but the grille was set pretty snug. It's not going anywhere!