http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=33591&item=8028298104 I'm wondering how much of an improvement this is?
i'm sure it helps stiffen up things a bit. however, you can find a used cusco one on nasioc for the same price.
i think it would only REALLY help once the suspension is stiff enough for the chassis flex to actually be a factor. The WRX Chassis is actually QUITE stiff.