I have some Genuine CUSCO Castor Rods and CUSCO Castor Rod Bracket/Mount. Fits AE86/5/xE7x
These are THAT much better than normal ones without the brackets its not funny. A lot of braking force gets put through the castor arm/bracket, plus normal pillow tension arms offset the pivot, adding to bump steer, these keep the pivot in the correct position.
Asking for $450.