I think I saw somewhere that the Z4 was rated at around 380HP? If they share engines, then hopefully the Supra has that much power as well.
EDIT: Z4 is hypothetically rated at 380
Because of stories like these, i'll definitely be purchasing this car. I previously owned at GT86, and loved that damned little thing. For what it's true purpose was, it was truly astounding. Thanks for sharing, Guff.