Here are scans from the 1965 Plymouth Data Book for the 1965 Barracuda. Thanks to John Hefler for sharing these and the following info.

"The pages I sent were, I believe, from a salesman's pocket reference book.. The book (ring binder) is 5" X 7-1/2" just the right size for a sport jacket or salesman's blazer pocket.. The pocket reference book covers all the 1965 Plymouth models... The first page says "1965 PLYMOUTH DATA BOOK" It might be a good idea to call those pages and the Valiant pages which I hope to get to soon as being from the '1965 Plymouth Data Book' ."

Click on each photo for a larger version.