GearHead Cafe
http://www.gearheadcafe.com/cgi-bin/affiliate/click.cgi?bartech

GearHead Cafe FACTORY AUTHORIZED OEM shop manual CD-ROMs provide written technical information covering 1909-1979 Ford, GM, MOPAR, and other classic cars and trucks, Scanned from the originals with an easy to use menu driven format that includes all of the original illustrations in CD-ROM format for your PC!.
This gives you the ability to view technical information from your personal computer. Our products work under any Windows operating system. When using your manuals for rebuilding or maintaining your auto, you might need several manuals to do the job. Our CD-Roms include ALL manuals specified for your make and model on one CD. For one low price.

New England Opel Club
http://www.opelgt.com

Opel Association of North America
http://clubs.hemmings.com/oana/
Welcome to the home page of The Opel Association of North America. Our mission is to provide owners of all U.S. imported Opels a source for locating parts, technical assistance, and a forum for connecting with other U.S. Opel owners.

Opel Club
http://www.opelclub.com/

Texas Opel Club
http://www.texasopel.com/