専門的なサイトではありませんが、ご参考になれば。
What's the difference between a Fender Mexican Jazz bass and American?
http://answers.yahoo.com/question/index?qid=20100119181726AASNL2...
American vs. Mexico Fender Jazz Bass
http://www.talkbass.com/forum/f8/american-vs-mexico-fender-jazz-...
Fender Jazz Bass (Mexican) Reviews
ありがとうございます。