Alpina has a power boost for BMW buyers who want a more sophisticated package with M-like performance. The Alpina B3 and B4 now have GT versions that, among other things, add 34 horsepower to the already potent twin-turbocharged inline-six. You now get 529 horsepower, 538 pound-feet of torque, and internal conflict deciding between these or full-fat M Competion models.
