The following links are of interest to any E21 owner:

• The BMW E21 Digest and FAQs - The single most important resource for any E21 owner. Technical help and digest subscription instructions. If you own an E21, you will want to subscribe to this digest!
• The E21 Performance Group - No longer being updated, but still good stuff.
• E21 Registry and Preservation Society
• The Unofficial Alpina Homepage,3 series cars.
• BMWE21.net, a site full of good E21 info from Europe.
• 323i.net Forums
• Ben Liaw's BMW Links
• BMW World