Installed a HDS 16 Carbon on our Precision Sonar Console Mount on a 721 today and the look was super impressive.
Our Precision mounts are adaptable for the Mega Sized Lowrance and Humminbird screens.
FYI ... I used my Carbons recently for a week of when I was fishing Sturgeon Bay and the Speed, Brightness and the Graphics were real impressive.
It will be interesting to see if the 16" model will replace some of the duals console units that are out there.
Here are some pics.