Steering column collar swap

http://www.moparmusclemagazine.com/howto/155_0308_mopar_steering_column_rebuild/photo_06.html

HERE, see these two thin grooves? They are the ones the article forgot to mention that you need to remove snap rings from, before you can slide out the steering shaft.

I don't know about years and models of interchangeability, but I would think that any steering columns that appear to be the same shape and size, and if they contain all the same components, will probably work. Have the seller take some good photos and some even better measurements for you. I would think the main things to look for would be overall length and diameter.
Also, make sure they will guarantee the turn signal switch and ignition were working properly, and there are no fried wires or terminals ($$$$ to replace).

My two cents,
Jerry