Steve Simmonds, of Easy-Up hood fame, used to make a conversion for 4 seaters into 2 seaters, he called it "The Dickie". This one was for sale at Bonham's a long time ago
https://themarket.bonhams.com/en/listings/morgan/plus-4-22/0c5f6e97-2084-45e1-8992-c36a590c1261, might give you some ideas. Steve might be able to help too info@simmonds.uk.com
