Bri.
Not wishing to tread on mustpost's toes I would say you were correct.
However, I note that the NASA Dryden Research Aircraft Photograph collection identifies the photograph (E49-032), which was I am sure
mustpost's source, as applicable for both the Douglas D558-1,Skystreak and for the -2 Skyrocket
Were the cockpits the same? I understood
When it became obvious that the D558-1 fuselage could not be modified to accommodate both rocket and jet power, the D558-2 was conceived as an entirely different aircraft.
Mel