Where can I find these

What are these pieces called?  These are for the front UCA's.  Ball joint shims?

I need to find some.

[IMG]http://i85.photobucket.com/albums/k76/moog177/NagisaBallJoint.jpg[/IMG]

you could probably find them at a hardware store. or hit up a dealer and show them picture, they could probably get it for you. they break down every single part to individual part numbers.

are those oem ball joints?

No these are Nagisa ball joints.  I found a used set of Nagisa FUCA's on Upgarage and they are missing these pieces.

I ran mine without those installed for a while without any noticeable issues.  I eventually had them put on but I believe AF told me they had to cut out the shim in the steering knuckle cause it wouldn't press out.

looks like they're adapters for the spindle to accept the balljoint. probably a different taper than oem so running w/o them would be unsafe. they could surely be machined once measurments were taken.