Mail-in Rebate applies only to new C5 or C6 Exhaust systems purchased from authorized CORSA Performance Dealers between March 1, 2010 and August 1, 2010. Excluded on purchase of XO-Pipe alone or purchases from internet auction sites. Rebates must be postmarked by August 31st, 2010. Official rebate form and proof of purchase required. Please allow 6-8 weeks for delivery. One gift per system purchased.