You can see at the end of the thread I took them back off, they were too bouncy.
If I ever install the non pivoting upper control arms in a car, I might try them out again. From my thread:
I was thinking that the non pivoting bushing upper control arms might limit the bouncing with these. That might also be a factor with the bouncy coil spring conversion kits, as T birds don't use the pivoting bushings and no one complains about T birds being bouncy.