I can't picture an International with Dodge running gear. It might have a Dodge transmission but it would have either a 304, 345 or a 392. There was also a 266 but that would have been pretty small for this application. Just a note, International did use the AMC 401 in the early 70's in the Travelall and called it V-400. The International 304 is not the same engine and the AMC 304.