PERFECTION PLUS: Ever longed for a big straight-six to power the otherwise sublime BMW E30 M3? Alpina did, and Octane drives the rare result.

The article discusses the Alpina B6 3.5 S, a rare car that combines the chassis of the BMW E30 M3 with a powerful straight-six engine. Alpina's modifications to the car, including enhancements to the engine and suspension, resulted in a vehicle that offered more torque and better handling than the original M3. Despite its limited production and high cost, the B6 3.5 S is praised for its performance and unique blend of power and precision. [Extracted from the article]