I had a circa 2000 Hardrock with a 80mm travel 1 1/8" threaded Suntour fork. I replaced it with the Big Dummy fork and converted to threadless. Did GAP and C&O on it. That fork definitely fits well there, and it has cantilever mounts. Here is the link to my thread: fork replacement, need help
I understand that the Big Dummy fork is the opposite of "lightweight" and it is not carbon