There are several individuals who rebuild and sell Columbia axles here in the states. I have two suggestions for you.
1. Join the Lincoln Zephyr Owners Club. There is an on-line application form at
www.lzoc.org. I would not recommend that you join the Lincoln Continental Owners Club - their primary interest is later model Lincolns and they have very little to do with the early V-12 cars these days.
2. Contact my friend of 40+ years, Dan Krehbiel at 38805 East Benton Road, Temecula, California, 92592-8217, USA. Dan is a long time LZOZ member and is the Columbia advisor for the Early Ford V9 Club. Dan built a Columbia axle for my 1939 Zephyr some ten years ago and it works flawlessly.
As I stated, there are many other folks building and selling Columbia axles these days. Dan is the only one I have personal experience with.
I have a Webshots Screen Saver photo album of the Columbia installation in my Zephyr at:
http://community.webshots.com/album/535592120cTKtFXThe Webshots software is free at
www.webshots.comGood Luck!