Steering column collar problem....HELP!

70 and up should use the same bearing. By the way, I have taken apart literally dozens of those columns and collars, bone yard units too, and never once needed a puller. As long as the snap ring and 3 screws are undone, and the turn signal stuff is out of the way it should come apart. If it's sticky I take a big flat bladed screwdriver and pry slightly where the turn signal arm space is cast into the collar. If its really tight I take a 2nd screwdriver and use both to pry 180 degrees apart, at like 3 o clock and 9 o clock. Works every time, and I've never hurt the 'plastic pins' yet. I have plenty of those bearings, used. They usually just need a good cleaning and a little grease. Unless its severely rusty you should be ok. Just wash it in a parts washer or use some carb cleaner or brake cleaner and spin it while soaking it with cleaner til it spins free with no tight spots. Then repack with a little wheel bearing grease.