I’ve owned my Morgan 3 1/2 years now, and to date I’ve spent to much money on upgrades which I’m sure I wouldn’t get back if I sold her.
It’s a good job

doesn’t know she wouldn’t approve

If I had to choose my 3 favourites in order.
1) Librands sports exhaust (sound is addictive)
2) ITG Induction kit (looks great to)
3) Panhard Rod
To date, I have also done:
Stainless dash bezels
Skid protection plate
Remap
Leather storage arm rest
Chrome door lock covers
Door check sets
Mohair hood cover
SiFab radiator
Alloy oil filler cap
Alloy header tank
Spare wheel / fitting plate
Two eared spinners
Front splitter
Wind blocker
Break reaction bars
Wolf bonnet stays
Remote grease kit
Smiths clock
There are many more but they already came with the car when I purchased.