The main thing not mentioned here was the 4wd system on the Eagle as per Wiki:

I remember the Fords slipping into (R) from (P) very well. My uncle was ran over by his 1971 Ford F-150 idling in park because of this defect. Broke his leg, doc put a cast on him & sent him home. He died from a blood clot that formed and went to his heart from it. My aunt stressed for months over suing Ford because…