Shift lever for a '70 query

[Aussie Ol' Blue]

I'm needing a shift lever to cut down. I have a smaller steering wheel and the original lever gets in the way when I reach for the wipers. I don't want to cut the one I've got. My questions are... are they year specific? do they differ from auto to manual? do they differ from tilt to non tilt (mine's non tilt), are there alternatives from other cars that fit? Where might I look for one??

Appreciate any help and info guys (and girls) and thanks in advance.