The manifold mountings are "standard" (flat plate) but the manifold looks either AR or Librands.
Head cooling is always going to be the imponderable. I left a gap on my cover of maybe an inch and a half, and didn't wrap the sides down. Also painted the underside matt black, and it's no problem after a few years.
Typically Morgan, every model needs something adding. The GDI (and Duratec) need engine covers. A basic and fundamental protection for the plugs. The GDI also needs the AR flash and exhaust system...............