I have a Ranger Z120 and it currently has a Lowrance HDS 5 in my console and a Lowrance Mark5x Pro up front. I want to add an HDS 8 or 10 with structure scan. I want to keep both my other units if possible. Although I know how to use my current units, I know little about how they can interact or what they can share or tansducers. I need someone to advise me, sell it and install it. If you have any recomendations or advice, please PM me. FYI I bought my Range from Bunch. They are great folks but not sure if their price for the new unit will be competitive.