Just remembered another source of the factory manuals--www.books4cars.com has each year's manual, from 1969 through 1973, for $32.84. They can also be contacted at
VossMotors@AOL.com. Might seem like an expensive book, but if you're serious about restoring the car, it's absolutely worth the money. BTW, this info comes from the March 2002 edition of the Blitz, the Opel Motorsport Club's monthly magazine (which is especially hilarious this month--see the Member Survey results), which is another great Opeler´s resource you might want to investigate, Heather.