I don’t know the difference with the DC-6, I don’t see the difference with the DC-6 of PMDG, I share with you this, real DC-7 video that I just discovered on YT, really nice.
actually, I didn’t understand why.
I changed it
The 7 is a stretched 6.
Different engines too. Apparently a bit “fussier” than the R2800 radials the DC-6 uses.