This for coil forks? Do you know what size stanchions they are? The little preload cap is a birch to find, but a LBS by me has a NOS whole top cap with the preload on in stock, if you confirm the size I can go ask about it for you.
If its the little ones found on the Z series from the 90's think I may have a pair :?
Mine are the earlier rounder ones. Were red, really faded.
The later ones had 2 flats and were curved at each end.
Those the fella's ?. grub screw in the side ?.
If its the ones off the air model then I think ive a single one of those too.