I have no experience with Top Speed, but I have a lot of experience with Tony and Fast Intentions. I would still go with F.I. even if the exhaust was just average (but it is actually awesome) because of Tony's more than exceptional customer service AND his work ethic/support. I cannot say enough about Tony and his team! You would have to work really hard to go wrong with F.I.!
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 2007 350Z NISMO #0618: Zerolift | UPREV | F.I. | Greddy | Competition Clutch | Injector Dynamics | Aeromotive | Pioneer | JL
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