I sent C6 Performance $400+ got nothing & they won't answer my messages!! In May 2012 I mailed in a postal money order to c6 performance dot com for $403.34 to buy a differential brace for my 2005 Corvette A4. Never heard a peep or received anything. I traced the money order and it came back as cashed. Ok, to give them the benefit of the doubt, I figure maybe someone stole the money order? So I eMail, fax, call, and even sent a certified letter that I received a return receipt for. NO RESPONSE!! As a last ditch effort, I have filed a mail fraud complaint against them with the postal inspector and am posting this message to the forums in hopes of resolution. Anyone else had any problems with this place? Anyone else know a DIRECT line to contact them? Are they a supporting vendor? Whatever you do, don't pay this place through the mail!