I presume the VC you wish to use is the one included with this file --> http://simviation.com/1/search?submit=1&keywords=C-47R&x=11&y=8
I've succeeded in merging the VC to the Awesome 4Some DC-3. I suggest trying it out on one variation first. Obviously make backup copies of all files/folders before modifying them.
First I pasted a copy of C47R_interior.MDL into one of the Model folders of the DC-3, editing model.cfg accordingly.
Renamed the existing Panel folder to Panel.0 before pasting a copy of the C-47 Panel folder in alongside it.
Copied the complete contents of the Douglas_C-47_V3.12_Beta\texture folder & pasted them into the Douglas_DC3\texture folder.
Finally edited the Views section of the Douglas_DC3 Aircraft.cfg like this.
eyepoint = -5.6
, -1.4, 3.26
//-6.495, -1.4, 3.26
I think that should do it. Please give it a go.