Well as the title says I've installed a set of ba/bf xr front bucket seats to my gq so here's abit of a write up on how to do it.
First off all get the xr seats and remove the original rails these are not needed.
Then remove the seats from the gq and remove the rails from seats I put the rails back in so I could work out the hights of the rails.
The outer rail needs to be raised 25mm I used abit of shs
Then notch the shs to suit the rail and drill holes to Match
Then drill a hole in the original bracket to suit the xr seat
Then you need to modify the inner rail as its about 50mm to short I just made a plate to fit the full length of rail
Then I attached the plate through the original real hole and drilled a new one to suit in the plate then you have all the holes were u need them for new seats.
Then we come to the seats them selfs when I put them in they were touching the pillar you could modify the rails to move over about 30mm but I did something different I swapped the seats around so iam using the passanger side for drivers and so on then you have enough room for all the adjusters of the seats
To make the seats look right remove the plastic panels and swap them around
Then drill this one out 30mm so the adjuster fits
Than bolt the seat down and ur done
I still haven't done the passanger side but should be simaller to the drivers but ill post some pics if any things different
Enjoy the comfort