Replacing SIM900 + Neo6m with SIM808

Using Arduino Project Guidance
1

Hello everyone.

I have a SIM900 with a Ublox Neo6m running fine, using TinyGSM and TinyGPS libraries.
Due to limited space I'd like to use the SIM808 only with the TinyGSM library.

Does anyone know how I can replace e.g. the following:

if (gps.location.isUpdated());

or

latitude = gps.location.lat();

These commands work with TinyGPS but not with TinyGSM.

Thanks for any suggestion/help.