Below are the coordinates that align GSX with the BlackBox Simulations Airbus A321. Just input these coordinates into the aircraft settings in GSX. If you have any issues or find better coordinates, please post them in the comments. Thank you.
----- Airbus A321 -----
NOSEGEAR
Nosegear Distance 14.26
PASSENGERS DOOR #1
Door with custom open/close checks
Name Front Passenger Door
Custom Check (L:BB_LDoorPax1,bool)
Position -2.36 14.52 3.76
Angle 0.00
CARGO MAIN DOOR
No door at this position
PASSENGER DOOR #2
Door with custom open/close checks
Name Middle Passenger Door
Custom Check (L:BB_LDoorPax2,bool)
Position -2.40 5.66 3.86
Angle 0.00
ENGINE #1
Position -5.76 4.00 2.12
PASSENGER DOOR #3
No door at this position
PASSENGER DOOR #4
Door with custom open/close checks
Name Rear Passenger Door
Custom Check (L:BB_LDoorPax4,bool)
Position -2.10 -17.76 4.08
Angle -9.00
SERVICE DOOR #1
Door with custom open/close checks
Name Front Service Door
Custom Check (L:BB_RDoorPax1,bool)
Position 2.34 14.52 3.80
Angle 0.00
CARGO DOOR #1
Door with custom open/close checks
Name Front Cargo Door
Custom Check (L:BB_DoorCargoFwd,bool)
Position 0.70 10.20 2.40
Angle 0.00
ULD Code BELT
ENGINE #2
Position 5.76 4.00 2.12
DEICER IN
Position 2.90 -0.80 3.42
DEICER OUT
Position 16.46 -5.28 5.18
FUEL
Position 9.26 -1.70 3.88
CARGO DOOR #2
Door with custom open/close checks
Name Rear Cargo Door
Custom Check (L:BB_DoorCargoAft,bool)
Position 0.70 -9.14 2.60
Angle 0.00
ULD Code BELT
SERVICE DOOR #2 Door with custom open/close checks Name Rear Service Door Custom Check (L:BB_RDoorPax4,bool) Position 0.70 -9.14 2.60 Angle 9.00