I used Performance on Line about 8 years ago on a '64 Cutlass I had. I sold the project before finishing it though. IIRC they used BAW parts for steering components, so I can't vouch for longevity. I know the upper control arms I purchased for my tall spindle kit were a good quality. Those first pictures I posted are the OEM overloads on my K30. I believe Hellwig makes some that clamp on.