The Pylone v2-31.5mm is available for motor with between axis of 31.5mm:
Motor :TORCSTER E2203-1550 - 16g
ESC : Hacker X-12 Pro - 15g
Lipo : 2 or 3S 350 mAh
For the 31mm , you can use Turnigy 2204-14T - 19g
SUNLU PETG +
Details and Pylon installation :
The pylon is located 2mm of from the edge of the canopy.
It has been designed with 2 degrees of cornering angle and 0 degrees of anti-torque angle
Make 3 notches above the fuselage to insert the 3 tabs of the pylon.
Then glue the pylon with ARALDITE 2028-1 glue