As I understand it, the transducer will work with any ds unit but will not work with down imaging. I just bought an I pilot terrova(non link) about a month ago and hooked it up to a HB 597ciHD. If I were going to be using down imaging up front I would see about getting it without the transducer and just put one on. I dealt with BBG and saved some but the best part is his know how.

I take that back, the best thing about dealing with BBG is when you call Brian.........you actually talk to Brian. You will need adapters, so tell him what you're planning and he will walk you through it.
You will love the I pilot.