From the beginning of TR7 development, British Leyland saw North America as a primary destination for its new sportscar. The car was to be the first of a new line of Triumph cars that was tailored for the American markets. Launched during one of the darkest times in British Automotive History, the car was Triumph's biggest seller. The author explains in great detail how to increase the performance of these four and eight-cylinder sports cars and how to select and transplant higher-performance engines. Contents include aesthetic changes, body strengthening, roll-cages, brake upgrades, performance wheel changes, gearbox, clutch, four-cylinder engine upgrades, selecting and fitting a V8 engine, improving the suspension and upgrading the rear axle, ignition, carburetor selection and fitting, improving existing and retro-fitting Electronic Fuel Injection (EFI), engine transplants, electrical reliability upgrades, weight reduction and more. Covering the whole car with over 500 color illustrations, step-by-step instructions, 23 clear line drawings and useful club and supplier listings, this book is a must have for any TR7/8 owner.