International Harvester used some engines made by other manufacturers in the Scout, including the American Motors straight-six and the Nissan SD33 diesel, but this one has a good ol' IHC V8 under its faded metallic-green hood. If it's the original engine (Scout owners tend to swap engines the way other truck owners replace brake shoes, so you never know), it's a 304-cubic-inch model making 140 horsepower.
Owners of modern SUVs would find the controls, instruments, and accessories inside a Scout II to be intolerably primitive, but at least this one has a full set of real gauges.
Let's try to imagine this worn-out truck when it was new. Would you have taken this over a Bronco or Blazer, back in 1974?