[Bigger is Better]

Some other differences to be aware of:
- The tie rod arm is further towards the center of the car for a B body spindle (later years anyways). Not a big deal but it does make your toe real goofy so you need to fix that before a drive to the aligment shop.
- Some B body spindles, I think just the later year HD suspension cars, use a bigger diameter lower balljoint. You would need to change your balljoint if you did use that but I would stay away from those.
- You can still buy new B body spindles from GM, cheap, less then $100 in the US (they are like $400 in canada, not sure whats up with that)