Whiteline BSF39XZ front sway bar for 08-14 Subaru WRX.
Whiteline's 2 hole 24mm adjustable sway bar allows trimming of oversteer/understeer through varying the sway bars ability to resist weight transfer via increasing or decreasing the effective arm length of the sway bars mounting position. If desired you can even set one side at the "hardest" position and set the other side a the "softest" position to achieve your desired effects.
This was used for 30K kms, then swapped for an STI suspension