Where are the 8 spark plugs in a 1992 ford mustang 2.3L?

A 1992 Ford Mustang with the 2.3L 4-cylinder engine has only four spark plugs, not eight. They are located on the top of the engine, one for each cylinder. To access them, you'll need to remove the engine cover (if equipped) and possibly some other components depending on your specific model and modifications. They are generally arranged in a row, two on each side of the engine. You'll need a spark plug socket and wrench to remove and install them.