I feel privileged that I've gotten to know Pete Larsen a bit since becoming an M3W owner, and I've learned much in these discussions about the choices Morgan made after buying Pete's ACE designs. Tires were mentioned earlier on this thread and was one Morgan design changes that I understand was primarily made for aesthetics and cost; I personally would prefer rubber that is designed to take a lateral load and has more contact for a better skid-pad and braking. The seating layout in ACE was a compromise of getting a shaft driven rear and a tire that can be changed without disassembly. I think overall Pete was disappointed that Morgan didn't take his designs to the next level but, as a now Morgan dealer, his opinions are reserved so these are admittedly my conclusions.
I don't think the ACE that Morgan dissected back in the UK was ever put pack together so that leaves 12 ACEs on the planet; now that's rare!
Interesting that this example has a 'Under Morgan Licence' plaque on the dash as it was one of the last three that Morgan let Pete finish after he sold to Morgan, since their builds' were already in-progress.
All of this cool history can be read in this book: https://www.amazon.com/Morgan-3-Wheeler-...71105&psc=1