Humminbird Helix 7 Mega SI G3N Install

Just picked up a Humminbird Helix 7 Mega SI G3N from ‪@ScheelsOutdoors‬ on sale for $599.99. I ran a Lowrance Elite Ti2 on my last boat but the graphs / Autochart seem to be better on the Humminbird units as far as depth shading. The SI picture also appears to be better than the Lowrance Units.
Humminbird Helix 7 G4N amzn.to/45UUy7q