The Ford Ranger has never had a 2.3L 8-cylinder engine. The 2.3L engine is typically a four-cylinder. Eight-cylinder Rangers have used larger displacement engines (like the 4.0L V6 or various V8s in different years and regions).
Therefore, there's no firing order for a non-existent engine. To get the firing order, you need to specify the *exact* year and engine displacement of the Ranger you're interested in.
