Originally Posted by unworthy1

here's a possible solution (but I think your best bet will be salvage the original fork despite the "too-long" threading)
I have an all-chrome genuine Ciocc fork that had a "steerer splice" done by Bernie Mikkelsen some years back and never put it to use.
it has 325mm of UNthreaded steerer so you'd need to find a 1" threadless HS (not so common but they are out there if you hunt).

By my quick calculations you should have just enough steering length to use it on your frame (needing 245mm) with a 30mm stack HS and 50mm clamp threadless stem, but such a stem may not be to you liking (that's why I didn't install it on either one of my Ciocc frames).

BTW sometimes you can find 1" threadless stems with a shorter-than-50mm clamp-height, I have one such made by Steelman that's 40mm. so if you find one you can add a spacer (and get a tiny bit more rise)

If such a fork interests you PM me. I am willing to sell it at cost but know what it cost me and therefore it won't be "cheap"