I'm confused! I have 2 Lowrance 7 Gen2 units linked w/ LSS-2 structurescan. My question is ... If I buy a 12" Gen 3 unit, will it plug and play? I understand that if I want he 3D capability that I will need a new "transducer". If I do that, will the Gen2 units work, or will I have to have 2 structurescan transducers? I just cant figure out what will work and what wont.

Thanks in advance.

KingRanch