I put a 60 series column into my 47. It is a pretty involved piece of work, and there is some dash and other sheet metal modifications necessary. I am really happy with the results! Here's the thread:
http://forum.ih8mud.com/40-55-series...into-40-a.html
I didn't do it for the tilt feature - but for the purposes of getting more of the switches, like windshield wiper and hazard, closer to hand. The way I did it, I retained the aluminum mounting points on the 60's column, and thus have the safer collapsible column in case of a crash.