i would assume with those that you have to buy a pair of ball joints, take them to a machine shop, and have them pressed onto the control arm.

http://www.partstrain.com/products/E...C-DX3-004.html
this page is some generic ball joints, $33-43 each. so with the $70 control arms, and $10-20 install fee (cuz shops try to screw you like that) you are in the $150-170 range. i would personally rather call it a day, go buy some Skunk2s or similar, bolt em on out of the box, and drive off. but thats just me.

http://www.sportcompactonly.com/prod...tm_medium=shop
skunk2 front arms for $169

GL man