Originally Posted by
rpenmanparker
Not only does the fork have to be able to be threaded, but the ID has to match
the OD of your quill stem. Choose a fork with a steel steerer and the right OD. Check that first.
Ding ding! The threadless forks steerer tubes I'm familiar with are typically less well finished than a similar threaded steerer tube. They might accept a quill stem... they might not.
I could be wrong. Check with Brett Flemming at Bike Gallery on Sandy (when he's around).