Yes i have the Morgan Aero-racing tubular manifold fitted to my Sigma 4/4. Purchased throu Wolf performance. Its a superb bit of kit and works really well along with a 200 cell sports cat - more power and a happier feeling engine. No idea on the Librands version - similar i imagine. The ITG air filter set up i do not have - others on TM do, and are happy with it i think. There is much on TM regarding air-flow characteristics around a Morgan front end - you may want to check these out before decide what to do regarding air-intake options.
The Wolf engine re-map for the Sigma is well worth doing - works even better with improved exhaust obviously, but the re-map alone is a real solid improvement.
