Swap Navman for Northstar and keep transducers?

[willp2]

I have a Navman Fish 4500 that just died. I've been wanting to replace it with a combo GPS unit. I am thinking of replacing my Navman with the Northstar Explorer 650 which I understand is the same thing as a Navman trackfish 6500.

So my question is if I swap these units, can I use my existing and relatively new transducers and fuel slow sensor? These things all being the same family should share components, but I'm not sure.

Thanks!