Not 1,000 % sure
Does the 3rd row GQ wagon seat have allowance for the wheel arches in the SWB ???
MQ/MK wagon 3rd row seats have been fitted into MQ/MK SWBs
There are 2 different SWB rear seats ,2 seater and 3 seater
Depending on your ID plate seating capacity will tell you what you need
If it will fit size wise,not sure if the mounting brackets will line up to mounting holes in the floor