Even the ones that are outsourced and not hand built, e.g. 'Superformed' vary between cars. It all depends on the year of the cars in question. Newer cars are likely have Superformed wings with the older cars having hand crafted ones.
One major issue is tire size. In my experience the tires of a Plus 8 are wider than those of other Morgan models, even in the same year. So the wings have to be wider to accommodate the increased width of the tires.
