A lot of Morgans are shown as 4/4 on the V5 whatever the model.
The most recent block of 2L 4/4s were the 75th Anniversary cars. Then a trickle of narrow bodied Plus 4s to special order.
The narrow Plus4s cost more than the standard Plus4s, so not many were made.
You can't get too prescriptive about this. 😊
