It should work if the length is right. IME 93 cranks fit JIS spindles pretty well. JIS might be a hair fat, but old 93 cranks a typically a hair enlarged from previous installation and removal, so it all works out.

As noted above, who much space is there at the end of the spindle?

I don't really understand what you're saying WRT "the cranks no longer move"..

Use a torque wrench to install them. Torque to about 27 to 28 ft lb. LIttle to no grease. I grease and wipe it off. Loctite on the NDS bolt won't hurt anything.