I had a crash on a bike. My frame suffered a small buckle in the top tube, a reputable frame builder said replacing the fork would be fine. The only problem is the fork I have was a custom made 1 off for a 69CM monster bike...

There are several inches of thread on the steertube. Can I effectively have a huge stack of spacers provided there is enough thread on the steertube? this is a vintage threaded fork and not a threadless.