Both the 350Z and RX-8 are supposed to be modern day semi-lightweight but most of all affordable sports cars. I really dont think mazda wants to go back to when the RX-7 cost over $40,000. Both the cars are supposed to be practicle for daily driving yet a blast for enthusiasts.
At the same time i think the RX-8 would benefit greatly from a turbo. If they ever actually release the Mazdaspeed version of the RX-8 it should have a turbo on it like all the others along with the tuned suspension and styling changes.
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