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the oem wing on some sentras and se-r's actually provide down force at 45 mph..stillens type 2 wing provides a bit more...though tall wing wont be good til about 120+mph...the front doesnt need down force because all the weight is up there..its nice to have some on the rear because if you have ever driven hard enough to get the back end swurly it'll make your heart drop!!!!..if you want more tracktion[?] up front go with wider tires...
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