Furuno might also have some devices using the MTK chipset and compatible with BT747. Anybody confirming this?
This is a list of GPS Logger Devices that BT747 supports. In general, BT747 supports devices with a MTK/MTK II-Chipset.
Support for other Chipset types/loggers is added bit by bit.
And even if your GPS is not a logger, BT747 may support GPS Chipset configuration.