I heard that orange peel on current cars is intended to hide imperfections.
The Morgan (at least mine) doesn´t have that. The paint is perfectly smooth and shiny like piano black. It has an absolutely even surface. No need to sand it.
I am using Swizöl (= Swissoil, Zymol, ...) on the Lotus and it still looks like new after 3 years and 20,000 km. Haven´t used it on the Morgan yet. The application takes some time to get it right.