OK So I found a place not too far away that will help for under $200. But just by chance I went and looked at the 1871 and for the price I basically HAVE to go with the new unit. I can not see info on the 1971 though?
So I get GPS chart plotter with Chirp capability. I've also been toying with NavNet aa well. I have a old radar unit I think it's a 1720, and it's 20 years old too. I'm seeing wireless connectivity to some part of Furuno instruments. So I guess I'll have to call some show rooms for assistance/explanations.
I have a Garmin w Airmar chirp on board and don't mind saying it's not what I had hoped for.
https://i.imgur.com/RzENNDQ.jpg