Howdy, I just bought a bought with two Humminbird fish finders on it. I would like to switch one of them out fora GPS/Sonar combo unit.

I have a Pirana Max 215 on the console, and a 535 up front with a trolling motor transducer.

I am OK with the 535 up front, but would like to have the GPS capability at the console.

#1 Will the 535 work with the transducer that is already in the boat from the P-Max 215 (fiberglass boat, shoot thru hull setup)?

#2 Is there a GPS/Sonar combo unit that will work with the transducer that's already in the boat?

Thanks