If anyone is still looking this is what I have added and seems to work.
lpadmin -p Konica-C368 -L "Mailroom" -E -o ARCMode=CMBW -o
EFDuplex=False -v lpd:// -P
/Library/Printers/PPDs/Contents/Resources/KONICAMINOLTAC368.gz -o
PaperSources=PC210 -o Fin...