Notice strut towers, the liner would normally go around those and towards the rear of the car and it is a two piece (i.e. one piece for each side).
Then in the complete back (not shown on picture) there is a 3rd piece to cover the lights etc. I have all of those and I put them back in now (still not sure if I have to or not).
This is the trunk lid, this piece I'm missing (it never came with the car), and truthfully I think that's the only piece I am missing. Frankly I can't even find a reference picture with one that has it but I'm pretty positive it was confirmed by someone that it's supposed to have that liner there.
Anyway, is that something I'm not allowed to remove in ASP?
For reference here is what it would look like with the liners in place:
Marcin D. : 1996 Mitsubishi Lancer Evolution IV GSR (RSified and Racecar-ish)