Off hand I don't know, but click the link in my signature line for an informative page I've been maintaining.
There's a document there that has the steering bearing dimensions from tons of bikes, maybe you can find out if they happen to use the same bearings.
That would leave the length of the steering stem as the only other variable, and that can be overcome in several ways.
Cheers.
-Alan
I've been following your other CX thread, that's a good project.
