How many catalytic converters does a 1997 Ford E150 Van have?

Engine spec: 4.6L V8
Stock exhaust obviously.

My guess is that it has 2, but maybe it only has one.

The F-150 of the same vintage had four IIRC. I imagine the Econoline is the same. Generally they are sold as a right or left set that are sold as two cats or possibly a pre-cat and main cat with a pipe connection the two.

Here's an idea. Look underneath the truck and count.