Mitsubishi parts from a Mitsubishi dealership or website.  Try discountmitsubishiparts.com, use a cross reference to a Galant they use the same suspension parts.  The part you need is the lower compression arm, it is larger and kinda curved with a ball joint.  You should be able to get them for half the price though Mitsubishi dealers.  I know, cause I've been looking too, and I have to replace the same arm soon too.

the lateral arm is recalled. that's the straight arm.
the curved, compression arm or pitman arm or whatever you want to call is the expensive one. you can usually find them on ebay for much less.

no, you need one of these.. 4 or 5
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