the liner is held in several places.

it's fixed to the inner wing with large plastic screws that turn 90 degrees and the come out. these are sort of behind the strut in the middle where the two halves join up, if that makes sense.

it's also fixed to the wheelarch area of the wing. those clips are a bit more of a shit to get undone intact. they are like a split square plastic thing, and the a torx head screw is put into them to split open the square and hold in place. but the scres don't really have a proper thread on, they're more or less just pushed in, so they don't just screw out.

you might find that the square headed bolt coming down from the airbox is rusted up. a pair of grips on the head should sort it, but it will probably shear off rather than undo.

hope that helps, and have fun.