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The Alpina B7 Bi-Turbo long wheelbase revealed at the Tokyo Motor Show today doesn't add anything to the less well-endowed Alpina B7 we saw at Geneva except length, but isn't that enough? The double-turbo'd 4.4-liter V8 brings 507 romping horsepower and 516 lb-ft. of torque – all of which is enough to get the white whale to sixty in 4.8 seconds.

Alpina's custom 21-inchers support an interior package touched up with the tuner's logo throughout. Our only cause for pause: the much larger steering wheel; the smaller diameter unit in the regular BMW helps to make the execu-barge a hoot to throw around a track.