I have a extra XHS 9 HPSI 180 T transducer on hand and I was thinking about putting it on my aluminum boat. The sonar that I will be using is the Humminbird 581i that takes the smaller XNT 9 20 T transducer. Just wondering if 2d part of the XHS 9 HPSI 180 T would work. Now I know that the SI and DI part will not work on this sonar but would the 2D part work as they are separate in the plug or is it going to be some reason it would not work?