Not sure exactly what that induction system is mounted on the engine; I don't believe it's a Weber setup, but more likely a Hilborn or Tecalemit Jackson fuel injection; did Shelby Catalogs ever make mechanical fuel injection induction systems available mail order?
It also appears, as best as I can make out, to have a Scintilla/Vertex/Ronco magneto distributor, I think maybe those 'were' listed in the catalogs?
Scott.