* 196 CID (3.2L) "Hurricane" inline-six: This was the base engine.
* 232 CID (3.8L) inline-six: A more powerful option than the 196.
* 258 CID (4.2L) inline-six (optional, later in the year): This larger six-cylinder became available later in the 1972 model year. The exact timing of its introduction varies depending on the source.
* 304 CID (5.0L) V8 (optional): A V8 was also available as an option.
So there wasn't one single engine; it depended on the specific Scout II model and its options.
