Diff between z32 TT and non-TT RLCAs?

[Beejis60]

So I'm swapping the Z32 uprights on my S13 and I need new ball joints and RLcA bushings so I'm thinking of just buying new RLCAs... Was wondering if anyone knows what the difference is between the TT and non-TT RLCAs? The cost differential is around $60 ea between the two, non-TT being cheaper and I know someone said the z32 RLCAs are the same as S13, but clearly nissan thinks they're not....

TIA

[codyace]

You'll need to reuse your S13 RLCA to work with the S13 upright, but you'll need to ensure you have the Z32 upright's lower metal conical centering piece.