First verify that both forks have the same crown race seat diameter. Even 1" forks had competing standards at 26.4mm (most) and 27.0 (JIS), plus other non-standard sizes.

You can get it off (road fork?) by using a flat punch VERY CAREFULLY. A little on one side, a little on the other. Maybe stick something under it when you switch sides, so you don't lose your progress.

Install with a length of 1" galvanized pipe. If you can get a piece less than one foot long, with one end unthreaded, shouldn't cost very much. Again, very careful--make sure that the pipe bears against the top of the race, and not the bearing surface. Use the pipe as a slide hammer, unthreaded end down. The race is seated when the noise changes.

Or go to your LBS with a six pack of the mechanic's favorite. Three minutes with the right tools.

Good luck

Mel