SpaceX has taken the Starship Hopper apart again. They are removing the placeholder Raptor engine. They will be adding in the fuel tanks and the new Raptor engines.
Elon Musk had sais the previously installed engines were a mix of raptor development and operational parts. The first hopper engine to be fired was almost finished assembly in California ten days ago.
— Elstatistik.se (@Elstatistik) January 15, 2019
Engines currently on Starship hopper are a blend of Raptor development & operational parts. First hopper engine to be fired is almost finished assembly in California. Probably fires next month.
— Elon Musk (@elonmusk) January 5, 2019