Upgraded the 2017 Ranger Cup Z520C Limited Edition last night & today. Went from 2 HDS-12 G3 to four units. Added the new Lowrance 3D structure scan (behind dash panel). Moved bow HDS-12 G3 to console with new Precision Sonar Dual console mount. Added two HDS-9's G3 o bow on Precision Sonar Over/under bow mount. All unit's networked & NEMA 2000 together to share waypoints & mapping. The 2017 Ranger Cup Z520C is now officially dubbed the "SS Overkill"! Love the Precision Sonar mounts! Can't wait for St. Clair this year.