They used "rated thust" for climb. You may be able to find takeoff and rated thrust settings for free on the web, but you will have a hard time finding cruise charts.  I have bought a few manuals and still don't have any, but I have found some fuel consumuption charts for cruise and have been using those to derive EPR settings from DC-8 cruise charts.

Anyway, even if you have the charts, you need a reworked EPR gauge and flight model for the cruise power settings to work.