when you look at the car it should be obvious
on passenger side youll need to remove the relay bracket and cut off and discard the end for the esc sensor (use the gnx esc sensor bracket and mount esc on ac box)
now you can see where the inner collar goes .. the the inner collars can only go in one spot on the inner fender , turn them around and mark the inside opening and the screw holes and cut a little larger
on driver side just remove the relays on fender , mark and cut the opening
due tothe tightness i used a plasma to make the opening , the collar has a lot of coverage so no worries cutting with plasma
the vents duct can go in from the cut you make for the outside vents
you arent going to find original gnx vents so youll have to work with what you can get and thats the kirban vents
get the vents they come with cutout instructions, for the outside cutouts drill the corners and i used a grinder with a thin disc , tape off the fender as it will throw sparks
once cut out if you cut enough you can push the ducts in and screw through the collars into the ducts , then glue the vents onto the fender