Hi hk76,
There's a post here on Steve's telling how to modify a 75-79 tilt column to fit a 69-74 Nova. The reverse can probably be done but I think you'd be better off just getting a 75-79 tilt column. It'd be a direct bolt-in. Plus a 75-79 tilt should be easier to find (and likely less expensive) than a 73/74 tilt anyway.