Book excerpt: Covers all aspects of improving these cars for today’s road conditions, and for higher performance generally. Increased engine power, better braking, appearance and comfort improvements are all covered in detail. This updated and revised edition includes information on numerous new subjects, such as V6 engines, air-conditioning, ignition improvements, engine management, and weight reduction. There is also an individual chapter on the various engines, and, in particular, some original and unique research on (four-cylinder) cylinder head performance and comparisons.