For what? Brand? I usually stick with Spicer or Federal Mogul (TRW), but there is also Moog. I believe TRW is the only brand that differentiates between the SC and regular T-Bird lower control arms (SC's have a higher durometer bushing). I generally stick with name brand stuff. If it's made in the U.S.A. or Canada then you should be getting good quality. If you are going through everything you'll need:
- Upper Control Arms
- Lower Control Arms
- Sway Bar End Links
- Sway Bar Frame Bushings
- Outer Tie Rod Ends
- Strut Rod to Frame Bushings
If the car is rusty underneath then be prepared to fight with the lower shock to control arm bolts (search around here for more info on that). I will tell you that you can buy new shock bolts new at most parts stores which is what I usually end up doing after I cut mine off.