With the heavy rear weight bias, it would take a lot of chassis tuning to get the Evora to understeer. Just switching an Elise to a more squared tire setup dials out nearly all of their understeer. Similar changes go for the 986/987, going to a square 235 or 245 setup certainly makes them more balanced than the factory fitments.
To your other point, is there any reason that Toyota/Scion can't run a supercharger while Subaru runs a turbo?
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