New for version 4

- expanded coverage of Diversion models
- expanded coverage of Police models
- expanded coverage of Injection model
- expanded coverage of the 750J Maxim
- improved resolution for many other models
- all-new XRef -- the parts cross-reference database. (Java application)
- new ads and articles
- many more tips and tricks

So much information, it is a 3 volume set!

What is the XJCD?