Plan my suspension!!!!

[68FBODY]

Ok so I am a little curious to as some use tall ball joints and some use tall spindles with tall ball joints? Im confused because i am trying to plan out my suspension and trying to get some info. I will utilize the stock sub and I have hotchkis lowering springs. I am going with scc uca's, now should I get tall spindles, tall ball joints, or both?


Is this a tall spindle? I found these but they say 2" lowering


This is a tall spindle from Heidts and its 2" lowering