Let's face it, a trad Morgan was never a technology tour de force! The parts that were upgraded, chassis, suspension, dials, transmission etc, most major mechanical bits, have from what I gather did not suffer additional quality issues towards the end of production. In the world of Morgan, the factory do seem to slowly get things sorted the longer something is in production.
With that mindset, I would assume getting as new of a trad as the budget can allow would be the best choice. The sigma engine in my 4/4 was used in so many other vehicles and I don't see there being any issues getting parts.
Mine is close to turning over 20,000 miles and have toured in it extensively, going as far as Greece and back without a hiccup. I know 20,000 miles isn't astronomical but for a sunny day car, it's not always sitting either.
