Sue, i really admire your perseverance, you'll get there! That Westin and Manik model appear to be almost the right shape, we just don't know the size, I think if those 2 have approx. the same size as the tailight, it won't be hard to bend them a little and respray with matte black or powdercoat. Your efforts are amazing, and if you find a model that fits well, i'll buy one too, and have it adapted to mine, i think its a great idea, since its so hard to find parts, this would be an extra protection, and looks really good in my opinion, keep up the good work!
these Tacoma have a good shape:
http://www.rhinoliningsoforlandpark....rds_Chrome.jpg
and you might find some good usefull info/contacts here:
http://forums.trailvoy.com/showthread.php?t=45389