for sale : usa WTB Lake Ontario C-MAP CARD?

[FullCircle]

Good afternoon, I recently purchased a boat with an old circa 2003 FURUNO GP1850 chart plotter unit, I realize this is a long shot, but I am looking for a Lake Ontario FPCard. The card that cam with the unit has a code NA-C102.07 I believe a lake O card has to have a similar code. I have plans to up date the unit but REALLY want to try and get a couple of seasons out of the old one. Does anyone have any suggestions ( where to search for a card, a work around that doesn't include buying a new unit yet) Thank you