Hi Guys, I currently have a 898 HD unit on my boat and was entertaining the thought of possibly upgrading to one of the new Helix 9 or 10's when they eventually arrive in Oz. As it's quiet a task removing and fitting a transducer on my rig, I was wondering if I would be able to use the 898 T/D with the new Helix units and also will the power head be the same as the 898 as well? I'm thinking the Helix T/D will be more high tec, but its worth asking. Stumpy