As others have said there are various approaches to getting sorted Morgan suspension setup. The key is understanding what you are doing and what the result will be, and if that will fit with your driving style and requirements.
There are limitations in the original design IMO that has a limiting factor on what can be achieved. However there are various approaches, some more towards a sporty and stiffer feel, but at the cost of comfort, Suplex front end was originally aimed at a more comfort ride, but has been modded taking on changes for a more sportier feel. The trad rear end is somewhat limited by the leaf springs/beam axle, lack of rebound and bump control, and the usually poor shock absorbers that come as standard. I looked at the suspension set up at length, and discussed with various people more knowledgable than me and concluded that the rear end could be tamed with some not too expensive mods, giving better rebound and bump control. I never got to try my theories out as I moved to an Aero.
If I have another Trad I would stick with trad set up, Mulfab it, but modify the front top shock hanger and fit fully adjustable shock absorbers for bump and rebound control (about £1K), and I would play with the rear as implied earlier and similar shocks. So keeping the trad feel but with hopefully a setup that can be trimmed for how I feel and how I want it to perform.
Tim and Darren at New Elms have set up loads of cars, road and race and will certainly be able to advise and set you up with what is right for you. Be very clear how you want the car to feel.
