Joined: Feb 2012
Posts: 19,352
Likes: 5,469
From: Rochester, NY
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
The answer is maybe. The crown race's ID is one factor but the bearing geometry and the race outer diameter are other issues. Without actually trial fitting (in situ) the parts one can't really say.
The vastly easier way is to clean up the old head set's outsides and use it again. Andy.