Original 1966 Willys Jeep Dealer Service Manual Supplement [SM-1027]. This Shop Manual Supplement covers the Model FJ-6A Fleetvan for U.S. Post Office use. This is what was used to service and repair these Models. It has information particular to these Models not covered in the regular Willys Service Manual [SM-1002-R5]. It is meant to be used along with this Manual for full coverage. This Supplement has information, specifications, troubleshooting, procedures and illustrations to aid in repairing these Fleetvans. It is in good condition with minor wear, soiling and blemishing [see photos]. Very rare and informative tool for the Jeep Owner or Collector.