I know when I drove a local's SA with the RE-Speed kit, I had a serious brown moment when the steering wheel started to shake like hell. The 2 bolts that secure the spindle to the LCA's had worked loose, somehow. Once tightened, it went away, but I know his has some other issues as well. Like for some reason, it is harder to turn left than right. Weird.
The FC subframe on his daughters car has no issues though