I bought it from a guy in Melbourne but it looks like it. I mounted using the two stock lower bolts, and although not the best, it won't come off unless you put a fair bit of pressure.Interesting...was this an E-bay wing? I kinda want one, even understanding quality issues. My main concern is mounting...
Just of note, when I got mine it was cracked alone the mounting points due to poor shipping so I've refiberglassed it. I'll take a picture of what I've done in the morning.
NemeGuero asked about it earlier and this was the link he said.
Sym Roof Spoiler Spoiler Wing Gc8 5dr For Subaru Impreza 93-01 Mod | eBay
I would recommend adding fiberglass to the mounting points to strengthen it but it's definitely not necessary.
Hope this was of help.