There’s no shortage of keen specialists offering Speed Six engine rebuilds and upgrades. Check their reputation and the warranty offered before buying. Among the most respected are TVR Power’s rebuilds taking the Speed Six (3.6 or 4.0) to 4.3-litre or even 4.5-litre high-torque with a five-year, unlimited-mileage warranty. Racing Green offers its well-developed FFF (Finger Follower Free) cylinder head and performanceenhancing Syvecs engine management system that gives more power and has a healthy warranty. Engine mounts regularly fail and drop on the exhaust side; improved ones are available. De-catting or fitting uprated catalytic converters is popular, but may be an issue at MOT time.
Converting to a hinged bonnet is popular; it’s best to get the Anderson connector for the jump leads moved to a clean and accessible inner wing position at the same time. Most cars’ original shock absorbers are getting weak by now; Nitron are considered the best upgrade and a definite improvement over the originals.