New Air-cooled VW Engines — Darryl's Air-cooled Engines for Vintage Volkswagen
Standard and High Performance VW engines
Aircooled VW Engine Interchange Manual: The User's Guide to Original and Aftermarket Parts for Tuning (Motorbooks Workshop): Seume, Keith: 9780760303146: Amazon.com: Books
Engines
Standard and High Performance VW engines
The Venerable VW Air-Cooled Engine
GEX International Rebuilt Performance VW Air Cooled Engines