Originally Posted by
jimc101
Before you even get into the can it be done safely issue, do you have a frame and fork that are the same spec size wise?
Generally, threaded = 1" & threadless are either 1 1/8th" or tapered, there was a crossover back in the late 90's where some bikes had 1 1/8th" threaded, but this was uncommon, and doesn't really match your vintage description.
The sizing is correct and matching. Practically a lot of the vintage mountain bikes offered between 1991-1993 used size 1 1/8 threaded forks. It was a common size.