Are you talking about this grill? This is the only Z grill I can find and it is made by E and G. The GMC logo mounts on the new grill according to the install instructions.

http://www.egclassicsinc.com/inventory/item.php?itemid=209

 

http://www.autodirectsave.com/0108-GMC-ENVOY-PUNCH-GRILLE-bolt-over-bolton-billet-grille-P730.aspx

like this one, it has the cutout for the gmc logo already on your present grille, and so when u install this over present grille the logo should show through...

 

I found this one on Amazon and a lot cheaper. You can blow the picture up a little to get a better look. I think it is the same grill just half the price of the one you linked too.

http://www.amazon.com/dp/B00865GOIS/?tag=patchalpazon.08-20

 

I was just wondering in general if anyone has one, or has seen one. i am skeptical about how it would look since you are counting on the GMC logo to come through. I cant find the one i originally looked at, atm im just lookin at these, i would rather have a grille guard and i figure a grill guard may just cover up the grille, or take away from it at least

 

Here is a pic of my cut out grill that I just installed, I think it has a better look to it than the overlay type grills do: