I would set a couple of different google alerts to try and find one on eBay or craigslist.
I do know first hand the Tundra (and I suspect the Tacoma) skid plates are identical, only the brackets are different.
With a little effort, you can have someone fab you a new bracket or adapter plate. The fasteners are readily available. If you need the identity of them, PM me and I'll give you the list.