Manual Trans Z-bar Frame Side Ball Stud Mount Support Bracket?
This one from Brewer's looks plenty strong:
http://www.brewersperformance.com/proddetail.asp?prod=FB676
Maybe the ones Brewer's carries are different than stock pieces?
I don't think I'll have too many torque stress issues with a /6 setup, either way. I want it to look factory, so a home-made plate isn't gonna cut it for me. Plus, it will be welded it in place, so it will be plenty strong.