" How to Power Tune Jaguar XK Engines" - this book gives full details on camshafts, camshaft timing, valve springs and cylinder head options and modifications. Carburation chapters cover: 13/4 and 2 inch twin SU setups; triple 2 inch SUs; and triple Weber and Dellorto setups. A special section is included on modifying SUs for improved engine performance, along with the relevant needle specifications. There are also full details on ignition systems and timing, exhaust manifolds and systems and general tune-up information.