If you think the single tab is strong enough, you could just bolt the front end of the adjuster to the tab. Washers on both sides of the swivel ball and either a castle nut and cotter key or a self locking nut. Heck, it doesn't even have to be metric.
It's pretty solid. The front hole is hooked up to the FEL stabilizer bar so think I'll give that a try.
Thanks