How this happened was I took my Helix 7 from my boat and swapped out my Helix 5 Ice. My son was using my Ice 45 and he said he would like a Sonar like mine. So the Helix 5 was sitting in a box so with a couple bolts and part of a hockey stick I mounted Helix 5 on Ice 45 case. So now I either buy the XI 9 20 or go back to the flasher. What is the other transducer I see being used on units. X 9 1525 or something. Would my Helix 7 G2 work better with this one. Then take the 20 ducer yo put on 5. Sorry it’s confusing.