Here is my solution for FoldApe4 factory GPS issue (see also my things: "Front GPS Mount for...", "Buzzer Holder for...") - alternate rear mounts for antennas and GPS: M100 Mini module and BK182 (probably any Beitian Bx18x should fit to this holder). Parts have a tight fit, holes may need to be adjusted (drill/file)., holes for mounting with M2 screws must be drilled. Printed in PLA+ (as shown on stl preview) with brim (no suppport), 0.2mm layer, nozzle 0.4mm.

The project assumptions were as follows:

• splitted mount (easy replacement of GPS module)
• possibility of the mount smart buzzer under GPS module
• max. as possible distance between VTX antenna and GPS antenna,
• 90 degree angle between VTX antenna and GPS antenna,
• custom shielded GPS cable (30AWG silicon wires) w/socket, connected to factory GPS plug.

At first I chose M100, because of lower weight and easier soldering. As this module works without issuses, I just leave it as is. Tested with VTx power 200/400mW, not any problems during flights, stable 20-22 satelites lock, hot start after battery replacement. - approx 30 sec. Baud rate and refresh rate set with U-Center to 57k/5Hz, autoconfig ON in BetaFlight.

My other 3D printed parts for DarwinFPV FoldApe4 (the list will be updated):

Stand for DarwinFPV FoldApe4
https://www.thingiverse.com/thing:6637191

Feet for DarwinFPV FoldApe4 drone
https://www.thingiverse.com/thing:6705054

Front GPS Mount for DarwinFPV FoldApe4
https://www.thingiverse.com/thing:6706426

Buzzer Holder for DarwinFPV FoldApe4
https://www.thingiverse.com/thing:6712437