[JMGCINCY2023]

We bought a 2000 3500 Express with Cummins and factory hardtop.  We brought it down from Michigan, always fresh water and just impeccably cared for.  It has a Raymarine c120 Radar system but we have figured out that without an inland waterways Navionics card, it is pretty much useless.  No luck finding a card for a unit this old.  What would be a good upgrade, Garmin or Raymarine.  Say, a medium budget as we will only be on the rivers.

Thanks, Mike