Contact SCAT, I'm sure they still offer Mopar cranks with the big Mopar rod journal on them. From the little bit of research I did a while back most everyone else had switched to the 2.200 journal. Eagle, Ohio, 440Source, Callies, etc. had all gone to the 2.200 journal on the longer stroke cranks.

Your other option is to call around to some Mopar engine builders. Muscle Motors, Indy, Best Machine, etc. Maybe someone has something sitting on the shelf. I know that Mancini Racing was selling some old Eagle cranks at discount recently so you might check with them also.