Good day @zero99z,
I might be misunderstanding you, but if your gps has JST connectors you should be able to use it with the PXFMini, as it has 2 6-pin and another 2 4-pin JST connectors. Taking into account 1 6-pin connector will probably be used for power input, you should be able to connect it to the other 6-pin connector, right? (assuming it's a 6-pin connector like the one we provide).
Could you take a picture to show the connector?