TJM's site is a bit confusing, because on the one hand it lists their extensive air bag testing as on the link you mentioned, but their Toyota page at:

http://www.tjmusa.com/products.htm#toyota

has "No" for airbags for all the 4Runners. So, I'm trying to contact TJM directly via their website, but I can't get their online form to work. I haven't had good luck with customer service from TJM. I've been trying for a year and a half to get some replacement parts for a TJM I already have for an '85 Toy and their people keep dropping the ball.