I don't have the Mazdaspeed one, but mine is similar. It's a little shorter at the base and the top and bottom are white instead of black, but it does have the carbon fiber inlay in the middle and it came with the adapter set, too. Mine works fine, and I imagine this one will, too. If you are very far from the broadcast towers you might get a reduction in signal quality, but I'm in a metro area and do fine.