The problem with a lot of these "fixes" is that they are simply band-aids. The real problem is the soft rubber bushings throughout the subframe and differential. They just allow too much deflection for a structure that should be solid and that just isn't how the suspension should work. Sure, it's great for a ride comfort and road noise reduction, but you can't get consistency when you have movement from a what should be a solid structure.
What's probably going to happen is I'll wind up dropping the entire subframe and replacing all the bushings with the aluminum ones from Ford Racing and just killing all that movement. Otherwise, I'm just adding bracing to a structure that wants to move and simply transferring force to other parts of the car that should be getting absorbed by the suspension. I'm okay with a quick, easy fix at the track, but ultimately I want it to perform correctly.
