Those are a 91-93 year forks. You can tell by the brake. Each year uses different length springs, so if you do bid on them be sure to measure before ordering new ones.
Dont bother unless you can get the complete forks, clamps, wheels and hubs on ebay. It will be way too exspensive any other way. Be happy with your kdx forks or go out and buy a kx250, thats what I did.