I'm installing some after market speakers on my STI and I used the stock bracket (the black plastic piece that the speaker is mounted to) that came on the stock speakers for the sti. I only had one speaker on the door and none on the driver door so God know what happened to it. So I'm currently running one speaker in the front so i need the one of the stock front speaker so i can use the bracket.
Some body out there must have the stock ones laying around somewhere. Let me know I'm willing to drive to you if you're in New England area
On the bottom pic shows the plastic piece that i need