Funny running into a Mustang II guy on a Cobra forum! , I have 4 of them but no spare columns. I'll check around on a few forums I frequent and try to find one in your area. As well you should be able to post a "wanted" ad at:
http://www.mustangii.net/
Just don't mention what it's for, some of us get pretty cranking about II parts not going to IIs
I know of one column with key near me but the guy want's $100 CDN for it and shipping may get pricy if it has to be shipped express.
Cheers,
Francis "Turbo II"
BTW: I will be away for a couple of days with work and won't be able to repy until Thursday or Friday