I got the mounting hardware with it. It can be purchased separately. It will definitely slow straight line speeds. However is will help everywhere else. The speed going into the straights will be faster. They are worth seconds even on a slow track like Buttonwillow.
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2007 C6 z51 416ci, KW variant III, Wilwood WS6, Traqmate.
2005 F-350 PSD 4x4 DRW Lariat
2013 Mustang GT Grabber Blue, track pack, Brembo, Recaro, 3.73s
2009 Jetta Auto 2.5 liter
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