If you can find the engine serial number on a raised area near the distributor,ex. "F0118JA" you can go to this site, http://no25.chuckthetruck.com/index.html (use page 3} and look for the last letters in the engine serial number, ex "JA" and see the year and application it was built for. Or if you just list that serial number here someone can probably help.

"Nothing astonishes men so much as common sense and plain dealing." - Ralph Waldo Emerson