It sounds like there isn't a clear consensus?
I'll say it's less than 100 ftlbs, because I tried it, and it didn't go well. After the bolt bottomed out, I turned it maybe another 3/4 turn, and my torque wrench never clicked. It just got "mushy". I'm not sure if the bolt was stripping (I doubt it), or if the subframe was squishing (more likely). It looked like a big bolt....100 seemed about right, but I guess not.
Anyway, for whatever reason, 100 wouldn't work. So I guess we are somewhere between 50 and 81?