which engine are you intending to finishing on ? BHD or DFX2?
i have some tools if you want
C4 2 BHD converter for 3di's
BHD 2 JO 3di's
If you want to view DFX models grab the dfx_obj zip and use
https://bit.ly/2MnrAZL
to view them. It's an old free viewer i use on win7
DFX obj files
http://www.dfreload.com/forum/files....on=file&id=637
JO obj files
http://www.dfreload.com/forum/files....on=file&id=636